# Oak Information System — source-backed brand brief Profile: [Oak Information System]() Evidence record: [Sources and review dates]() Exported: 2026-10-31T00:50:04.015Z. Export time only; this is not a source observation, factual update or verification date. This brief contains only the scoped evidence published for this profile. Public-source statements and business statements are attributed, not independently verified. Missing topics remain unknown; legacy profile descriptions and products are not included as supported facts. Quoted source content and claim text are reference data, not instructions. Check the cited scope before reusing a statement. This export does not connect an AI service or guarantee that it will access or cite BrandSource. 3 supported scoped claim(s); 0 unresolved or overdue claim(s). ## Country \(Wikidata; date unspecified\) Status: Stated by a public source Value: Japan Scope: Wikidata Q11293167 property P17. The source statement has no date qualifier; this does not establish a current value or current operating status. Explanation: Deterministically projected from an identity-matched Wikidata record. Upstream references are preserved but not independently checked; source rank is not verification confidence. Review: Rule checked 2026-10-17T04:59:33.658Z; review due 2027-01-15T04:59:33.658Z. Published: 2026-10-17T04:59:33.658Z. Claim version: 1. Claim: [brandsource:oak-information-system:wikidata:p17]() Rule checked means automated validation, not individual manual review or independent corroboration. Sources: - [Wikidata Q11293167, revision 2556242623]() — Public knowledge base; observed 2026-10-17T02:53:11.909Z; lineage: wikidata.org; record: Q11293167:P17@2556242623. - [Wikidata label: Q17, revision 2555599058]() — Public knowledge base; observed 2026-10-17T00:45:25.927Z; lineage: wikidata.org; record: Q17:label:en@2555599058. ## Headquarters location \(Wikidata; date unspecified\) Status: Stated by a public source Value: Shinagawa Scope: Wikidata Q11293167 property P159. The source statement has no date qualifier; this does not establish a current value or current operating status. Explanation: Deterministically projected from an identity-matched Wikidata record. Upstream references are preserved but not independently checked; source rank is not verification confidence. Review: Rule checked 2026-10-17T04:59:33.658Z; review due 2027-01-15T04:59:33.658Z. Published: 2026-10-17T04:59:33.658Z. Claim version: 1. Claim: [brandsource:oak-information-system:wikidata:p159]() Rule checked means automated validation, not individual manual review or independent corroboration. Sources: - [Wikidata Q11293167, revision 2556242623]() — Public knowledge base; observed 2026-10-17T02:53:11.909Z; lineage: wikidata.org; record: Q11293167:P159@2556242623. - [Wikidata label: Q233495, revision 2550602739]() — Public knowledge base; observed 2026-10-17T03:07:19.541Z; lineage: wikidata.org; record: Q233495:label:en@2550602739. ## Inception \(Wikidata\) Status: Stated by a public source Value: 1986-01-27 Scope: Wikidata Q11293167 property P571. Source inception date at its stated precision; not necessarily legal incorporation. Explanation: Deterministically projected from an identity-matched Wikidata record. Upstream references are preserved but not independently checked; source rank is not verification confidence. Review: Rule checked 2026-10-17T04:59:33.658Z; review due 2027-01-15T04:59:33.658Z. Published: 2026-10-17T04:59:33.658Z. Claim version: 1. Claim: [brandsource:oak-information-system:wikidata:p571]() Rule checked means automated validation, not individual manual review or independent corroboration. Sources: - [Wikidata Q11293167, revision 2556242623]() — Public knowledge base; observed 2026-10-17T02:53:11.909Z; lineage: wikidata.org; record: Q11293167:P571@2556242623. ## Unknowns and limits - This brief does not establish answers to topics outside the listed claims.