Anchor: A small drum took up a beat, and the slaves strained and tugged in unison.
Entailed: The slaves toiled to the beat of a drum.
Contradiction: There was a strange lack of unanimity to the slaves' behavior.
Contradiction: A child is sitting on the curb.
Contradiction: The measures are meaningfully done and do not rely on making judgement.
Contradiction: The women are attending an opera.
Contradiction: We're having wet weather right now.