context: It is almost certain that Brian is green. Chances are slight that Jeff discarded the apple. There is almost no chance that Julie is in the kitchen. It is unlikely that if Jeff discarded the apple, and Julie is in the kitchen, then John went to the hallway. We doubt that if either Julie is in the kitchen, or Jeff discarded the apple, then Mary moved to the garden. It is probable that if either Julie is in the kitchen, or Brian is green, then Greg is a lion.
hypothesis: It is highly likely that either Brian is green, or Jeff discarded the apple.
valid_hypothesis: It is highly likely that either Brian is green, or Jeff discarded the apple.
invalid_hypothesis: It is improbable that either Brian is green, or Jeff discarded the apple.
hypothesis_assertion: Either Brian is green, or Jeff discarded the apple.