Anchor: Excavations of Pompeii begin
Entailed: Pompeii is being excavated and work has already begun. 
Contradiction: Pompeii has never been excavated but might be sometime in the future. 
Contradiction: A man is running along a beach.
Contradiction: There is a person skateboarding.
Contradiction: The waiter is hurrying to get to work.
Contradiction: There are army people and boys.