Anchor: Two people in full attire fencing in a gymnasium with one onlooker from the bleachers in the background.
Entailed: Two people are competing.
Contradiction: Three people are outdoors.
Contradiction: There are people outside.
Contradiction: Two people with tennis rackets are standing  in a gym.
Contradiction: A man reads a magazine.
Contradiction: two people sit down in the middle of a gym while another fights a wall