context: It is highly unlikely that Mary went to the office. It is probable that Bernhard is a swan. It is almost certain that Sandra took the apple. It is almost certain that if Sandra took the apple, or Bernhard is a swan, then Fred left the football. There is almost no chance that if Bernhard is a swan, or Sandra took the apple, then Brian is yellow. There is almost no chance that if Mary went to the office, and Sandra took the apple, then Lily is white.
hypothesis: It is likely that either Sandra took the apple, or Fred left the football.
valid_hypothesis: It is improbable that either Sandra took the apple, or Fred left the football.
invalid_hypothesis: It is likely that either Sandra took the apple, or Fred left the football.
hypothesis_assertion: Either Sandra took the apple, or Fred left the football.