context: Chances are about even that Julius is a rhino. It is likely that Mary went to the kitchen. It is impossible that Greg is a swan. It is probably the case that if Mary went to the kitchen, or Julius is a rhino, then Brian is a lion. It is probably the case that if Greg is a swan, and Mary went to the kitchen, then Bill got the milk there. There is a very good chance that if Julius is a rhino, or Greg is a swan, then Jessica is a wolf.
hypothesis: It is probably the case that julius is a rhino, and Mary went to the kitchen.
valid_hypothesis: It is probably not the case that julius is a rhino, and Mary went to the kitchen.
invalid_hypothesis: It is probably the case that julius is a rhino, and Mary went to the kitchen.
hypothesis_assertion: Julius is a rhino, and Mary went to the kitchen.