Tamao Shiwaku
Japanese athletics competitor (1906-1990)

Tamao Shiwaku (塩飽 玉男, May 12, 1906 – December 15, 1990) was a Japanese runner. He competed at the 1936 Olympics in the marathon but did not finish the race.
He died in Sakaide, Kagawa on December 15, 1990.
Begin with the source’s own compact description: “Tamao Shiwaku” is japanese athletics competitor (1906-1990). The dossier treats that line as a proposition to test through Tamao, Shiwaku and Japanese, not as a finished interpretation.
Why this record matters
The phrase “japanese athletics competitor (1906-1990)” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 2, 2026. The linked authority identifier is Q21176641. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1906, 1990 and 1936.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Tamao Shiwaku” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.