Anchor: A man sings and plays guitar in a public area made, while people sit on wood benches.
Entailed: A person plays guitar
Contradiction: A man is running
Contradiction: The dog is chasing a cat.
Contradiction: People have forgotten the values the country was founded on.
Contradiction: It is not necessary to be particular when interpreting the results of studies. 
Contradiction: You sound like you are young.