Anchor: A man stands atop a rock while looking at a bicycle.
Entailed: The man is looking at a bicycle from atop a rock.
Contradiction: The man is standing on a grassy hill and he wants the bike.
Contradiction: Teodor found Senor Juanito's purse and decided not to return it. 
Contradiction: A marble sculptor is sculpting a monster.
Contradiction: A guy is riding a snowmobile.
Contradiction: If you ask them, it's a sign of preference, but I'm none the wiser.