Anchor: (An incubus is an evil spirit that has sex with sleeping women; the term is a product of medieval theological lore, not of the Bible.)
Entailed: Incubuses are evil spirits that have sex with women that are sleeping. 
Contradiction: Incubuses are sweet and courteous. 
Contradiction: A foot-powered toy car inside a house rusts in a corner.
Contradiction: There is a woman.
Contradiction: Nobody has a jacket.
Contradiction: Some people have eaten food.