context: It is highly unlikely that Julius is a lion. We doubt that Brian is gray. It is highly likely that Mary is in the kitchen.
hypothesis: We believe that either Mary is in the kitchen, or Brian is gray.
valid_hypothesis: We believe that either Mary is in the kitchen, or Brian is gray.
invalid_hypothesis: It is impossible that either Mary is in the kitchen, or Brian is gray.
hypothesis_assertion: Either Mary is in the kitchen, or Brian is gray.