Anchor: Three boys are performing a human jump rope on a sandy beach.
Entailed: Three boys are outside and on a sandy beach.
Contradiction: Three boys are playing frisbee on a sandy beach.
Contradiction: Look out for tuna fish on skewers.
Contradiction: I have found that African-Americans seem to have their own unique viewing patterns. 
Contradiction: The man is sitting on the couch.
Contradiction: One man is looking at his phone.