Anchor: Led by OU neurobiology professor Scott Hooper, students beat back the law with a referendum that won by a 46-vote margin (1,506 in favor, 1,460 against).
Entailed: The students beat the law by a 46 vote margin of vicotry.
Contradiction: The students lost the referendum in a landslide.
Contradiction: I only speak after people have finished speaking. 
Contradiction: After checking her face looked okay, she asked the DJ to play a rock song.
Contradiction: A female playing tennis on the field
Contradiction: Students work in a laboratory.