Anchor: The island is mostly quiet, with a short, three-month summer season.
Entailed: The island is mostly without much noise with a summer season that lasts three months.
Contradiction: The island is mostly raucous with a nine-month summer season. 
Contradiction: They don't have any because they sold their last place in Georgetown.
Contradiction: I will go first if you don't.
Contradiction: The biker is in the windowless bathroom.
Contradiction: He was very focused on the task of brushing his coat, befroe he put it on.