Question: Whom between  Natasha Zvereva and Raúl Ramírez did Gigi Fernández win the most Grand Slam double's championships with?
Sentence (from "Natasha Zvereva"): The team of Zvereva and Gigi Fernández won more women's doubles titles and Grand Slam women's doubles championships than any other team since that of Martina Navratilova and Pam Shriver.
Relevant evidence: Yes