Anchor: At the same time, top Enron executives were free to exercise their stock options, and some did.
Entailed: Top Enron executives were free to exercise their stock options.
Contradiction: Top Enron executives were free to exercise their stock options and every single person exercised their options
Contradiction: Girl scouts are selling cookies.
Contradiction: Three teenagers are horsing around.
Contradiction:  Gates should wear a black shirt to match Jobs.
Contradiction: an old man has a tray