Anchor: A man riding a dirt bike takes a turn on a large dirt covered course.
Entailed: The man is riding a dirt bike.
Contradiction: the man is a woman.
Contradiction: There are no plans to use money to help the community.
Contradiction: Tuppence seemed to understand the situation with him thoroughly. 
Contradiction: They don't ask for software development.
Contradiction: Two cowboys attempt to wrangle a bull.