Question:  Liezel Huber and Arantxa Sánchez Vicario, are both six time Grand Slam title winners of what sport?
Sentence (from "1989 French Open – Women's Singles"): Steffi Graf was the two-time defending champion, but lost in the final to 17-year-old Arantxa Sánchez Vicario, 7–6, 3–6, 7–5, ending her winning streak of Grand Slam singles titles at five.
Relevant evidence: No