context: It is highly unlikely that Mary went to the office. We believe that Bernhard is a swan. There is a better than even chance that Lily is yellow. Chances are slight that if Mary went to the office, or Bernhard is a swan, then Emily is a sheep. We doubt that if either Mary went to the office, or Lily is yellow, then Brian is a lion. It is probably the case that if Lily is yellow, or Mary went to the office, then John discarded the apple.
hypothesis: It is probable that brian is a lion, or Mary went to the office.
valid_hypothesis: It is unlikely that brian is a lion, or Mary went to the office.
invalid_hypothesis: It is probable that brian is a lion, or Mary went to the office.
hypothesis_assertion: Brian is a lion, or Mary went to the office.