In this task, you will be presented with a premise and a hypothesis sentence. Determine whether the hypothesis sentence entails (implies), contradicts (opposes), or is neutral with respect to the given premise sentence. Please answer with "Contradiction", "Neutral", or "Entailment".
Q: Premise: At that moment the dogs began to bark loudly , and the bear rushed out of the thicket and set off in the direction of the mountain .<br>Without thinking that they had nothing to defend themselves with , should the bear turn and attack them , the boys gave chase . <sep> Hypothesis: A dog attacked them.
A:
Contradiction