Anchor: Two kids with helmets playing with Nerf swords while one looks on drinking from a plastic cup.
Entailed: Kids playing with fake swords.
Contradiction: Three kids are having a swordfight.
Contradiction: There are 4 kids.
Contradiction: The children are racing on bicycles.
Contradiction: Two kids with helmets battle with Nerf swords while another drinks from a plastic cup to do battle with the victor.
Contradiction: A dog runs around the lake.