Anchor: By nightfall, when she came back from the city, he was groaning in pain.
Entailed: He was in pain when she came back. 
Contradiction: He was perfectly fine when she returned. 
Contradiction: There aren't any adequate schools in the Harlem area.
Contradiction: I'm happy that it has all come to an end.
Contradiction: Two people eating ice cream cones at the mall.
Contradiction: The Calettans are lively people even though their town is very poor.