thumb|200px|Ondo-ō-hashi and the strait is a strait in Seto Inland Sea in Kure, Hiroshima between the main island of Japan and Kurahashi Island.
thumb|200px|Ondo-ō-hashi and the strait is a strait in Seto Inland Sea in Kure, Hiroshima between the main island of Japan and Kurahashi Island.
==Overview== thumb|200px|Ondo-ō-hashi In the legend, Ondo-no-seto was excavated under the leadership of Taira no Kiyomori from 1164 to 1167 during the Heian period, to allow passage of trading ships for trade with China. But academic research shows that this legend is not the historical fact. Both old documents research and geological research proved that this strait was not an artificial product.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).