Anchor: Various actors perform on a heart shaped stage.
Entailed: The actors are performing.
Contradiction: The actors perform on a square stage.
Contradiction: The EPA has made it much harder to submit information as data elements with much harsher and more strict requirements. 
Contradiction: A man sits on the sidewalk looking at a camera
Contradiction: The two children play the guitar.
Contradiction: It was the whipmasters who pushed a large number of slaves.