{"schemaVersion":"1.0","generatedAt":"2026-09-22","licence":{"status":"not-yet-granted","spdx":null,"statement":"No licence has yet been granted for SmellBook-created datasets. They are publicly readable; reuse beyond citation and quotation needs permission until a licence is published."},"node":{"entityType":"claim","urn":"smellbook:claim:petrichor-rain-on-dry-ground","key":"petrichor-rain-on-dry-ground","label":"Petrichor and rain on dry ground","description":"The scientific literature has used the term petrichor for the characteristic earthy odour associated with rain acting on dry mineral and soil environments.","scope":"Historical scientific framing of petrichor; this does not mean every rainy environment has one identical chemical profile.","evidenceClass":"scientific","canonicalUrl":"https://smellbook.com/evidence/claims/petrichor-rain-on-dry-ground","attribution":"SmellBook (https://smellbook.com)"},"outgoing":[{"relation":"cites-source","label":"cites source","entity":"smellbook:source:petrichor-1964","entityLabel":"Nature of Argillaceous Odour","record":"/data/graph/source/petrichor-1964.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-PETRICHOR-001].sourceIds","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:garden-after-rain","entityLabel":"Garden After Rain","record":"/data/graph/smell/garden-after-rain.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-PETRICHOR-001].smellSlugs","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:petrichor","entityLabel":"Petrichor","record":"/data/graph/smell/petrichor.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-PETRICHOR-001].smellSlugs","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:rain","entityLabel":"Rain","record":"/data/graph/smell/rain.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-PETRICHOR-001].smellSlugs","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:soil","entityLabel":"Soil","record":"/data/graph/smell/soil.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-PETRICHOR-001].smellSlugs","evidenceClass":"editorial"}]}],"incoming":[],"corrections":[],"citation":null,"boundary":"Edges are typed and unweighted; none is a similarity, recommendation or personalization score. Browser-local Personal SmellBook data is never part of this export."}