Anchor: Could drug companies lower their costs?
Entailed: It is unsure whether drugs companies may be able to lower their costs. 
Contradiction: It is one hundred percent clear to everyone at all times that drug companies can lower their costs. 
Contradiction: A massive cellphone falls into the ocean, causing a catastrophic tidal wave.
Contradiction: Someone is playing paintball.
Contradiction: Jon said to hurry up.
Contradiction: The baby is not on the ground