Anchor: see i didn't have to take any other exit test because i've been teaching for quite a while
Entailed: I had been teaching for enough time that I didn't have to take any other exit tests.
Contradiction: I had to take a lot of different exit tests. 
Contradiction: The dog is sleeping in his master's bedroom, curled up at the foot of the bed.
Contradiction: The room lit up.
Contradiction: Men on mountain bikes race outdoors.
Contradiction: All female nurse clinicians implemented the study.