Anchor: A man is taking a shower.
Entailed: A man is in bathroom taking a shower.
Contradiction: There is no water running in the shower and no one is in the bathroom
Contradiction: Someone who writes book after book to refute what he doesn't understand is proving they do understand things.
Contradiction: The Enthroned Madonna is the most important piece in the museum.
Contradiction: Shellfish is never served with rice. 
Contradiction: The analysis discusses the definitions of small entities.