Question: Whom between  Natasha Zvereva and Raúl Ramírez did Gigi Fernández win the most Grand Slam double's championships with?
Sentence (from "Natasha Zvereva"): Natasha Zvereva, or Zverava, (born Natallya Maratawna Zverava; Belarusian: Наталля Маратаўна Зверава; 16 April 1971) is a former tennis player from Belarus.
Relevant evidence: No