context: Chances are about even that Brian is green. We believe that Mary moved to the office. Chances are slight that Lily is a frog. It is likely that if Brian is green, and Mary moved to the office, then Bernhard is white. We believe that if either Mary moved to the office, or Lily is a frog, then Fred discarded the milk. It is improbable that if Lily is a frog, or Brian is green, then John went to the office.
hypothesis: It is probably not the case that brian is green, and Fred discarded the milk.
valid_hypothesis: It is probably not the case that brian is green, and Fred discarded the milk.
invalid_hypothesis: We believe that brian is green, and Fred discarded the milk.
hypothesis_assertion: Brian is green, and Fred discarded the milk.