Anchor: A group of people riding on a parade float.
Entailed: A group takes part in the parade
Contradiction: A group of people order a rootbeer float
Contradiction: The First Amendment does not affect government action.
Contradiction: You know someone could be sentenced to thirty-five years and paroled for good behavior in three.  
Contradiction: A band is practicing on Mars.
Contradiction: Three kids are playing ball.