Anchor: You're not supposed to be back until spring.
Entailed: You're not supposed to be going back until it's spring.
Contradiction: You're not supposed to be back until autumn.
Contradiction: A man chases his dog in the park.
Contradiction: The bodies were not going anywhere because of the safety lines in place. 
Contradiction: They do not need to make sure the quality of automated systems is good.
Contradiction: A dog is getting wet.