Anchor: Players from two hockey teams, one in black jerseys and one in white, fight over a puck on an ice rink as a referee and audience look on.
Entailed: The players are playing hockey
Contradiction: The players are currently fighting with fists.
Contradiction: People running a marathon.
Contradiction: Data with large sample sizes are more useful to us. 
Contradiction: Without towers, the structure was made as low to the ground as possible to avoid easy detection from afar.
Contradiction: A man inspects wires on a tall ladder wearing a blue shirt.