Question: Are both Olga Medvedeva and Thanh Hải, Bắc Giang from the same country?
Sentence (from "Nguyễn Thanh Hải"): Nguyễn Thanh Hải( born 26 November 1988) is a Vietnamese footballer who plays as an attacking midfielder for V- League( Vietnam) club SHB Đà Nẵng.
Relevant evidence: No