Anchor: I stumbled out onto the streets- festival still whirling all around.
Entailed: The festival was still going on when I went into the streets.
Contradiction: The festival ended yesterday.
Contradiction: A boy is ridding the ferris wheel.
Contradiction: Yes, absolutely! 
Contradiction: Seven adults are standing on top of a mountain of sand.
Contradiction: The mice stared at each other and everyone kept quiet.