Question: Manuel "Manny" Sobral, is a former boxer, competing in the welterweight (– 69 kg) division, a resident of Vancouver, British Columbia, he represented Canada at which event that took place in the "Chamshil Students' Gymnasium" in Seoul between September the 17th and October the 2nd in 1988?
Sentence (from "Zhang Guozheng"): He ranked fourth at the Sydney Olympic Games in 2000 in the 69 kg class.
Relevant evidence: No