context: There is almost no chance that Greg is a swan. It is likely that John dropped the milk. It is impossible that Bernhard is a frog. Chances are slight that if John dropped the milk, or Bernhard is a frog, then Sandra left the apple. It is probably the case that if John dropped the milk, and Bernhard is a frog, then Mary went to the bedroom. It is probably the case that if either Bernhard is a frog, or Greg is a swan, then Lily is a frog.
hypothesis: It is almost certain that greg is a swan, and Sandra left the apple.
valid_hypothesis: It is impossible that greg is a swan, and Sandra left the apple.
invalid_hypothesis: It is almost certain that greg is a swan, and Sandra left the apple.
hypothesis_assertion: Greg is a swan, and Sandra left the apple.