context: It is probably not the case that Julius is a frog. Chances are slight that Julie moved to the park. We believe that Mary went to the kitchen.
hypothesis: We believe that either Julie moved to the park, or Julius is a frog.
valid_hypothesis: It is probably not the case that either Julie moved to the park, or Julius is a frog.
invalid_hypothesis: We believe that either Julie moved to the park, or Julius is a frog.
hypothesis_assertion: Either Julie moved to the park, or Julius is a frog.