Premise: Wilt Chamberlain . Chamberlain is the only player in NBA history to average at least 30 points and 20 rebounds per game in a season , a feat he accomplished seven times . He is also the only player to average at least 30 points and 20 rebounds per game over the entire course of his NBA career .
Hypothesis: Wilt Chamberlain averaged at least 30 points and 20 rebounds per game over his entire career.
Label: CONTRADICTION