context: It is unlikely that Greg is a swan. It is unlikely that Emily is a cat. It is highly likely that Sandra left the apple.
hypothesis: It is highly unlikely that greg is a swan, and Emily is a cat.
valid_hypothesis: It is highly unlikely that greg is a swan, and Emily is a cat.
invalid_hypothesis: It is highly likely that greg is a swan, and Emily is a cat.
hypothesis_assertion: Greg is a swan, and Emily is a cat.