Anchor: One problem with online polling is that pollsters can't e-mail people at random.
Entailed: Pollsters aren't allowed to just e-mail people randomly.
Contradiction: Pollsters are often encouraged to e-mail folks at random.
Contradiction: Harry S. Truman was a Republican President.
Contradiction: A man is wearing a blue robe.
Contradiction: Computers and magazine being free are the same.
Contradiction: The men were cooking.