context: Chances are slight that Yann is tired. It is probable that Greg is a rhino. It is unlikely that Mary went to the kitchen.
hypothesis: We believe that mary went to the kitchen, or Greg is a rhino.
valid_hypothesis: We believe that mary went to the kitchen, or Greg is a rhino.
invalid_hypothesis: There is almost no chance that mary went to the kitchen, or Greg is a rhino.
hypothesis_assertion: Mary went to the kitchen, or Greg is a rhino.