Anchor: um-hum  do you go to an aerobics class or do you watch on TV
Entailed: Do you attend an aerobics class?
Contradiction: You don't even do aerobics, right?
Contradiction: The guy shrugs off an attempted tackle.
Contradiction: You will see a flash of a kingfisher or hornbill among the birds.
Contradiction: This is completely normal human behaviour.
Contradiction: The dogs are in the water.