context: There is a better than even chance that Bill left the milk. There is little chance that John went to the office. There is a very good chance that Bernhard is a lion. There is a very good chance that if John went to the office, and Bernhard is a lion, then Lily is a lion. It is improbable that if Bill left the milk, or John went to the office, then Greg is green. It is probably the case that if John went to the office, or Bernhard is a lion, then Fred is in the school.
hypothesis: Chances are about even that greg is green, and Bernhard is a lion.
valid_hypothesis: It is highly unlikely that greg is green, and Bernhard is a lion.
invalid_hypothesis: Chances are about even that greg is green, and Bernhard is a lion.
hypothesis_assertion: Greg is green, and Bernhard is a lion.