context: There is little chance that Lily is a frog. It is probably not the case that Bernhard is green. Chances are slight that Greg is a swan. It is probably not the case that if Bernhard is green, or Lily is a frog, then John discarded the milk. Chances are about even that if Greg is a swan, and Bernhard is green, then Mary went to the office. There is a very good chance that if either Lily is a frog, or Bernhard is green, then Julius is a lion.
hypothesis: It is certain that greg is a swan, or Mary went to the office.
valid_hypothesis: Chances are slight that greg is a swan, or Mary went to the office.
invalid_hypothesis: It is certain that greg is a swan, or Mary went to the office.
hypothesis_assertion: Greg is a swan, or Mary went to the office.