Anchor: A young woman ascends a flight of stairs while checking her cellular phone messages.
Entailed: A woman walking down stairs.
Contradiction: A man going downstairs listening to music.
Contradiction: We were in Philadelphia.
Contradiction: Dave gave up on other thoughts as he realized where he was.
Contradiction: They are swimming at the beach.
Contradiction: He enjoys using a three or four-year-old push mower.