Anchor: Either way, it's cheap entertainment there's no charge for boat watching.
Entailed: Watching boats is free and therefore serves as an inexpensive form of entertainment. 
Contradiction: There is a fee charged for boat watching and as such, it's a costly way to entertain oneself. 
Contradiction: The woman is enjoying the hot July sun.
Contradiction: risk assessments were performed.
Contradiction: The skateboarders are sitting down
Contradiction: He was very calculated with his moves.