Anchor: By law, GAO staff can be assigned on detail only to congressional committees, not to leadership or personal offices.
Entailed: Gao lawfully can be assigned to detail only to congress committees
Contradiction: Gao must work with personal offices 
Contradiction: Children play with a spark plug.
Contradiction: An old man wearing clothes.
Contradiction: He always bother everybody when he gets loud.
Contradiction: The boy is not wearing shoes.