Question:  Austin Abayomi Koledoye, is a Nigerian professional basketball coach, he's coached Cambodia's national basketball team, which he led to its best performance ever at which 2015 event that occured in Kallang, Singapore?
Sentence (from "Basketball at the 2015 Southeast Asian Games"): Basketball at the 2015 Southeast Asian Games was held from 9 to 15 June 2015 in Kallang, Singapore.
Relevant evidence: Yes