Anchor: A little girl kicks a ball in front of a soccer net.
Entailed: The girl is playing with a ball
Contradiction: The little girl is playing basketball
Contradiction: Mercury, NOx, and SO2 are best considered in harm reduction by themselves, since they bear no relation to each other.
Contradiction: A happy kid is on a swing.
Contradiction: I never play cassettes, only the radio. 
Contradiction: A person with some clothes on.