Premise: The 1975 Federation Cup was the 13th edition of the most important competition between national teams in women 's tennis . Martina Navratilova . She was ranked in the world 's top 10 in singles for a record 20 consecutive years ( 1975 -- 1994 ) , a span which included 19 years in the top 5 , 15 years in the top 3 , and 7 years as the world No. 1 ranked singles player . At the time , Navratilova was told by the Czechoslovak Sports Federation that she was becoming too Americanized and that she should go back to school and make tennis secondary .
Hypothesis: Martina Navratilova is a person.
Label: ENTAILMENT