Anchor: A big white dog and a small black dog sit in the snow.
Entailed: There is snow on the ground.
Contradiction: There are two dogs swimming in a lake.
Contradiction: He won't ever be happy, regardless of what happens with food stamps. 
Contradiction: A boy is getting ready to throw snow.
Contradiction: I don't think somebody will have to do what I did
Contradiction: A man looking at at map.