context: We doubt that Greg is white. We believe that Jeff went to the kitchen. It is highly likely that Brian is a frog. It is probably not the case that if Brian is a frog, and Jeff went to the kitchen, then Julius is white. It is probably not the case that if Brian is a frog, or Greg is white, then Sandra dropped the milk. There is a better than even chance that if Jeff went to the kitchen, and Greg is white, then John moved to the garden.
hypothesis: It is highly unlikely that either Jeff went to the kitchen, or John moved to the garden.
valid_hypothesis: It is likely that either Jeff went to the kitchen, or John moved to the garden.
invalid_hypothesis: It is highly unlikely that either Jeff went to the kitchen, or John moved to the garden.
hypothesis_assertion: Either Jeff went to the kitchen, or John moved to the garden.