Anchor: a group of football players huddled together in the middle of the field.
Entailed: Football players in a huddle.
Contradiction: Football players in the locker room.
Contradiction: The walls were empty.
Contradiction: I have a plan for when I want to be left alone.
Contradiction: I don't watch pro football or basketball.
Contradiction: Before cars, you would see lots of people walking to the showgrounds.