Anchor: There were perhaps two dozen people, all clustered around the museum entrance.
Entailed: There was over a dozen people gathered near the museum.
Contradiction: There was only one person standing by the door of the museum.
Contradiction: The most boring thing to see is the reliquary. 
Contradiction: The biker is riding his bike on the wire very outdoors.
Contradiction: The guy wears a yellow striped jumpsuit with suspenders.
Contradiction: I am not opposed to smoking Cuban cigars, but I have never tried a cigarette.