Anchor: It was not uncommon for seekers to be built, tested, and reworked seven or eight times before they were acceptable.
Entailed: Seekers were sometimes tested several times before they were accepted.
Contradiction: Seekers are always accepted without any testing.
Contradiction: girl eats orange
Contradiction: The hockey players are on ice.
Contradiction: The girls are in a house.
Contradiction: Africa is not a country.