context: It is certain that Mary went to the office. It is probably the case that Brian is a lion. Chances are about even that Gertrude is a mouse. It is almost certain that if Brian is a lion, or Mary went to the office, then Bill got the milk there. It is probably not the case that if either Gertrude is a mouse, or Mary went to the office, then Lily is green. There is almost no chance that if Gertrude is a mouse, and Mary went to the office, then Jessica is a sheep.
hypothesis: It is almost certain that bill got the milk there, or Lily is green.
valid_hypothesis: It is almost certain that bill got the milk there, or Lily is green.
invalid_hypothesis: It is improbable that bill got the milk there, or Lily is green.
hypothesis_assertion: Bill got the milk there, or Lily is green.