context: We believe that Julius is green. It is probably the case that Mary went to the kitchen. We believe that Lily is a rhino. It is probably not the case that if Lily is a rhino, or Mary went to the kitchen, then Greg is gray. We believe that if Mary went to the kitchen, or Lily is a rhino, then Sandra left the apple. It is highly unlikely that if either Lily is a rhino, or Julius is green, then John picked up the milk.
hypothesis: It is almost certain that either Julius is green, or Mary went to the kitchen.
valid_hypothesis: Chances are about even that either Julius is green, or Mary went to the kitchen.
invalid_hypothesis: It is almost certain that either Julius is green, or Mary went to the kitchen.
hypothesis_assertion: Either Julius is green, or Mary went to the kitchen.