context: There is a better than even chance that Greg is a swan. It is improbable that Julius is a frog. It is impossible that Fred went to the kitchen. There is almost no chance that if Fred went to the kitchen, and Greg is a swan, then Bernhard is green. It is certain that if Greg is a swan, or Julius is a frog, then Mary left the football. There is a better than even chance that if either Greg is a swan, or Julius is a frog, then Jeff moved to the office.
hypothesis: It is likely that either Bernhard is green, or Fred went to the kitchen.
valid_hypothesis: It is impossible that either Bernhard is green, or Fred went to the kitchen.
invalid_hypothesis: It is likely that either Bernhard is green, or Fred went to the kitchen.
hypothesis_assertion: Either Bernhard is green, or Fred went to the kitchen.