context: We doubt that Jeff went to the kitchen. It is probably not the case that John moved to the office. It is unlikely that Bernhard is green. It is almost certain that if John moved to the office, or Jeff went to the kitchen, then Mary got the milk. It is improbable that if Jeff went to the kitchen, and John moved to the office, then Brian is a lion. There is a very good chance that if Bernhard is green, or Jeff went to the kitchen, then Greg is yellow.
hypothesis: We believe that brian is a lion, and Bernhard is green.
valid_hypothesis: It is impossible that brian is a lion, and Bernhard is green.
invalid_hypothesis: We believe that brian is a lion, and Bernhard is green.
hypothesis_assertion: Brian is a lion, and Bernhard is green.