context: It is highly likely that Greg is yellow. It is probably not the case that Sandra dropped the milk. It is impossible that Brian is a swan.
hypothesis: It is highly likely that brian is a swan, or Greg is yellow.
valid_hypothesis: It is highly likely that brian is a swan, or Greg is yellow.
invalid_hypothesis: It is probably not the case that brian is a swan, or Greg is yellow.
hypothesis_assertion: Brian is a swan, or Greg is yellow.