Anchor: they don't mash  they don't compress at all and they stay forever
Entailed: They're unable to be squashed together and they don't go away.
Contradiction: They begin to biodegrade after one week. 
Contradiction: A cat is sleeping on a blanket.
Contradiction: Two dogs are outside.
Contradiction: So they all just live in a cave then?
Contradiction: The woman has a helmet on her head.