context: A carpenter is working on a roof at a house being built.
hypothesis: It is highly likely that a man is hammering the final shingle on a roof.
valid_hypothesis: There is almost no chance that a man is hammering the final shingle on a roof.
invalid_hypothesis: It is highly likely that a man is hammering the final shingle on a roof.
hypothesis_assertion: A man is hammering the final shingle on a roof.