Anchor: Two smiling girls are peeking around a stairwell.
Entailed: girls are smiling
Contradiction: the girls are asleep
Contradiction: Common Cause has no position as to the details of how or why political parties are spending millions of dollars on ads.
Contradiction: A dog is carrying a toy.
Contradiction: There is no youth in Japan.
Contradiction: This might fit the description you are looking for, a gentle surf, coral reef within swimming distance to shore, and rocks and seaweed for snorkling.