context: We believe that Fred discarded the milk. We believe that Julius is a frog. It is certain that Lily is green. Chances are about even that if Fred discarded the milk, and Lily is green, then John moved to the garden. It is certain that if Fred discarded the milk, or Lily is green, then Greg is yellow. There is little chance that if Julius is a frog, and Fred discarded the milk, then Jeff went to the kitchen.
hypothesis: It is almost certain that either Jeff went to the kitchen, or John moved to the garden.
valid_hypothesis: Chances are about even that either Jeff went to the kitchen, or John moved to the garden.
invalid_hypothesis: It is almost certain that either Jeff went to the kitchen, or John moved to the garden.
hypothesis_assertion: Either Jeff went to the kitchen, or John moved to the garden.