Anchor: group of people by the ocean holding a net
Entailed: A group of people are near the ocean.
Contradiction: A group of people are on the beach sunbathing.
Contradiction: A woman is driving to the grocery store.
Contradiction: It's not uncommon for people to ask if upper management has any women but what I want to know is if there's any qualified women. 
Contradiction: It is not possible for the future benefits to be in excess over future premiums.
Contradiction: My friend is unfortunate.