Anchor: A skater is jumping in the air over some stairs at night.
Entailed: A skater is outside.
Contradiction: A skater is watching tv on his couch.
Contradiction: The girls are braiding each others hair in bed.
Contradiction: Boilermakers who retrofit installations are predicted to be in demand until 2010. 
Contradiction: The customers are selling produce.
Contradiction: I am trying to pay off my credit cards and I am doing well.