Anchor: I'm being serious with you, now give me a serious answer.
Entailed: I am serious that I want a serious answer from you.  
Contradiction: I am joking when I ask you for a serious answer.  
Contradiction: The man is riding his atv on the city road.
Contradiction: two people are riding bikes
Contradiction: Three kids climb on a jungle gym and one hangs upside down.
Contradiction: A man is using an ATM.