context: There is almost no chance that Brian is a frog. It is probably the case that John picked up the milk. We believe that Sandra left the apple. There is almost no chance that if John picked up the milk, or Brian is a frog, then Bernhard is green. There is little chance that if Sandra left the apple, or John picked up the milk, then Mary moved to the garden. It is highly unlikely that if either Sandra left the apple, or Brian is a frog, then Julie is in the kitchen.
hypothesis: We believe that brian is a frog, or Sandra left the apple.
valid_hypothesis: We believe that brian is a frog, or Sandra left the apple.
invalid_hypothesis: It is highly unlikely that brian is a frog, or Sandra left the apple.
hypothesis_assertion: Brian is a frog, or Sandra left the apple.