Question: What was this major international multi-sport event, with the opening ceremonies taking place on 27 July, and in which the South African field hockey player Bernadette Coston competed for the outh Africa women's national field hockey team?
Sentence (from "Bernadette Coston"): Bernadette Coston (born 17 August 1989) is a South African field hockey player.
Relevant evidence: Yes