Anchor: He enters the room, unlocking the door by means of one of the other doorkeys ”they were all much alike. 
Entailed: He enters the room after unlocking with one of the keys.
Contradiction: He could not enter the room despite having one of the doorkeys.
Contradiction: A group of people are at a church.
Contradiction: A man is boarding his boat.
Contradiction: 2 people are on the path.
Contradiction: GAO reduced their staff to accommodate their budget.