Premise: Stefanie Maria `` Steffi '' Graf ( [ ˈʃtɛfiː ˈgʁa : f ] ; born 14 June 1969 ) is a German former tennis player , who was ranked world No. 1 during her career . Graf is regarded by some to be the greatest female tennis player of all time .
Hypothesis: Steffi Graf is a football player.
Label: NEUTRAL