Anchor: So many pounds a year I'm worth to you. 
Entailed: I'm worth some measurable number of pounds a year to you. 
Contradiction: I'm not worth even a measurable number of pounds a year to you. 
Contradiction: Cyclists cycled up the mountain.
Contradiction: A person is looking out of a window.
Contradiction: today is friday
Contradiction: The boy is playing and instrument and the girl is singing.