Anchor: A brunette male reaching over a cubicle with a pointy stick, popping balloons.
Entailed: a man pops balloons in the office
Contradiction: a man blows up balloons
Contradiction: Stocks tend to vary more widely than stock returns over 20 year periods.
Contradiction: Two youths standing on an inclined plane.
Contradiction: He was perfectly aware of why he had issued his challenge.
Contradiction: He was responsible for the creation of the first coins.