{"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":"period","urn":"smellbook:period:1862-08-30","key":"1862-08-30","label":"30 August 1862","description":"30 August 1862: a time described in a historical source SmellBook cites (exact day). SmellBook lists the smells its checked historical passages document at this time; they record what was written then, not how anything smells today.","edtf":"1862-08-30","precision":"day","canonicalUrl":"https://smellbook.com/periods/1862-08-30","attribution":"SmellBook (https://smellbook.com)"},"outgoing":[],"incoming":[{"relation":"historically-documented-in","label":"time documenting","entity":"smellbook:smell:subway-metro","entityLabel":"Subway / Metro","record":"/data/graph/smell/subway-metro.json","provenance":[{"basis":"claim-historical-passage","field":"historicalPassages[CLM-UNDERGROUND-001].period","claim":"smellbook:claim:no-smell-of-damp-on-the-first-underground","period":"1862-08-30","periodBasis":"stated-in-passage","locator":"p. 362","evidenceClass":"historical"}]}],"corrections":[],"citation":"SmellBook. (2026). 30 August 1862 (period). SmellBook knowledge graph, dataset release of 2026-10-25. smellbook:period:1862-08-30. https://smellbook.com/periods/1862-08-30","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."}