Changes

#	Step	Field	From	To	Why
16,122	bootstrap_labels	prefLabel	—	[{"@value":"Nitrogen oxides","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:wasAttributedTo"…	Bootstrapped prefLabel from legacy name field
16,123	bootstrap_labels	name	Nitrogen oxides	—	Purged legacy name field to enforce prefLabel usage
53,080	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Medium stack, <150 meters","population_density":"Rural (<1000 peop…	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to non-urban air or from high stacks
53,081	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-mest15me-ru10pesq	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to non-urban air or from high stacks
55,218	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Aircraft cruise height"}	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to lower stratosphere and upper troposphere
55,219	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-aicrhe	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to lower stratosphere and upper troposphere
68,234	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Long-term"}	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified (long-term)
68,235	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-lote	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified (long-term)
187,180	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Ground level","population_density":"Urban (>1000 people/square mil…	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to urban air close to ground
187,181	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-grle-ur10pesq	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to urban air close to ground
198,530	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Unknown"}	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified
198,531	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-unkn	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified
218,635	unit_normalization	unit_iri	—	https://vocab.brightway.one/units/unit/KiloGM	Unit IRI set from normalization of 'kg'
224,799	normalize_name_case	prefLabel	[{"@value":"Nitrogen oxides","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:wasAttributedTo"…	[{"@value":"Nitrogen Oxides","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:wasAttributedTo"…	Title-cased words without internal capitals (preserved words with uppercase letters beyond the first character)
242,358	enrich_references	properties	{}	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO"],"at…	Added ChEBI/PubChem properties (chebi_ids=0, pubchem_cids=1)
242,359	enrich_references	skos_definition	—	[]	Merged ChEBI/PubChem definitions into skos:definition
242,360	enrich_references	references	[]	[{"@id":"http://jglobal.jst.go.jp/en/redirect?Nikkaji_No=J941E","provenance":{"prov:wasGeneratedBy":"enrich_references.…	Added references with provenance; cas_numbers=['11104-93-1']; matched_chebi_ids=[]; candidate_pubchem_cids=[787, 145068]; selected_pubchem_cids=[787]; formula_similarity_expected=[]; pubchem_selection_rule=curated_cas_then_formula_similarity_then_prefer_chebi_aligned_when_unambiguous_else_keep_all_cas_matches; single_cas_commonchem_link=yes
252,695	rdkit_pre_consensus	properties	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO"],"at…	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO"],"at…	rdkit_pre_consensus from 'NO'; added: molecular_mass, monoisotopic_mass
269,911	consensus_match	altLabel	[]	[{"@value":"MeSH ID: D009589","@language":"en","source":{"prov:wasGeneratedBy":"consensus_match","prov:wasAttributedTo"…	group_key=nitrogenoxides\|\|dimension=Environmental > media=Air > strata=Medium stack, <150 meters > population_density=Rural (<1000 people/square mile); cas=11104-93-1; added Common Chemistry CAS names as altLabel: MeSH ID: D009589, NOx, Nitrogen oxide, Nitrogen oxide (NO<sub>x</sub>); object_uuid=fo-448a647824c8ff39
269,912	consensus_match	cas_match_labels	—	{"11104-93-1":"exactMatch"}	group_key=nitrogenoxides\|\|dimension=Environmental > media=Air > strata=Medium stack, <150 meters > population_density=Rural (<1000 people/square mile); group_sources=[]; cas_sources={'11104-93-1': []}; assigned CAS labels from group consensus; object_uuid=fo-448a647824c8ff39: {'11104-93-1': 'exactMatch'}
277,902	opsin_iupac	properties	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO"],"at…	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO"],"at…	opsin_iupac: set authoritative IUPAC name, SMILES, InChI from 'Nitrogen oxide'
284,613	rdkit_post_consensus	properties	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO"],"at…	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO","NO"…	rdkit_post_consensus from '[N]=O'; added: inchi2d_key_string, molecular_formula, molecular_mass, monoisotopic_mass; confirmed: smiles_string, inchi2d_string
287,076	withhold_ambiguous_mass	properties	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO","NO"…	{"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["H3NO","NO"…	withhold_ambiguous_mass: removed molecular_mass, monoisotopic_mass; the flow carries 2 candidate structures, so no one mass describes it
292,868	dedupe_altlabels	altLabel	[{"@value":"MeSH ID: D009589","@language":"en","source":{"prov:wasGeneratedBy":"consensus_match","prov:wasAttributedTo"…	[{"@value":"MeSH ID: D009589","@language":"en","source":{"prov:wasGeneratedBy":"consensus_match","prov:wasAttributedTo"…	Deduplicated altLabel values and removed entries matching prefLabel
307,567	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/191b44d4-90c9-…	associations resolved on the elementary layer
308,637	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/1c952836-ea05-…	associations resolved on the elementary layer
315,134	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/2f89fbbd-e428-…	associations resolved on the elementary layer
374,618	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/e575ebc3-0a3b-…	associations resolved on the elementary layer
380,299	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/f79d0f8f-2b0e-…	associations resolved on the elementary layer
400,624	link_flows_to_their_substance	types	—	["https://w3id.org/chemrof/NeutralMolecule"]	the substance's answer, copied onto its flow