context: There is a better than even chance that Mary grabbed the milk. There is almost no chance that Bernhard is gray. It is likely that Bill went to the kitchen. It is probably the case that if either Mary grabbed the milk, or Bernhard is gray, then Gertrude is a mouse. Chances are about even that if Bill went to the kitchen, or Mary grabbed the milk, then John moved to the garden. It is probably not the case that if Mary grabbed the milk, or Bill went to the kitchen, then Jessica is a wolf.
hypothesis: Chances are about even that either Bill went to the kitchen, or Mary grabbed the milk.
valid_hypothesis: Chances are about even that either Bill went to the kitchen, or Mary grabbed the milk.
invalid_hypothesis: It is almost certain that either Bill went to the kitchen, or Mary grabbed the milk.
hypothesis_assertion: Either Bill went to the kitchen, or Mary grabbed the milk.