Question: Who won one women's grand slam singles title at the US Open in 1990, Brian Gottfried or Gabriela Sabatini?
Sentence (from "Gabriela Sabatini"): She won one women's grand slam singles title at the US Open in 1990, the women's grand slam doubles title at Wimbledon in 1988, two WTA Tour Championships titles in 1988 and 1994, and a silver medal at the 1988 Olympic Games in Seoul.
Relevant evidence: Yes