context: It is unlikely that Mary went to the kitchen. It is probably not the case that Greg is a lion. Chances are slight that Sandra left the milk.
hypothesis: It is probably not the case that either Mary went to the kitchen, or Sandra left the milk.
valid_hypothesis: It is probably not the case that either Mary went to the kitchen, or Sandra left the milk.
invalid_hypothesis: It is highly likely that either Mary went to the kitchen, or Sandra left the milk.
hypothesis_assertion: Either Mary went to the kitchen, or Sandra left the milk.