context: We believe that Sandra left the apple. It is probably the case that Greg is yellow. It is certain that Brian is a swan. It is highly likely that if either Brian is a swan, or Greg is yellow, then John dropped the milk. It is almost certain that if Brian is a swan, or Greg is yellow, then Julius is a rhino. It is almost certain that if either Sandra left the apple, or Greg is yellow, then Mary went to the garden.
hypothesis: It is probably not the case that greg is yellow, or Julius is a rhino.
valid_hypothesis: It is certain that greg is yellow, or Julius is a rhino.
invalid_hypothesis: It is probably not the case that greg is yellow, or Julius is a rhino.
hypothesis_assertion: Greg is yellow, or Julius is a rhino.