context: It is probably the case that Mary grabbed the milk. There is a better than even chance that Bernhard is a frog. Chances are slight that Julius is gray. There is a better than even chance that if Julius is gray, or Mary grabbed the milk, then Lily is a rhino. There is little chance that if either Julius is gray, or Bernhard is a frog, then Greg is white. It is likely that if either Bernhard is a frog, or Mary grabbed the milk, then Jessica is a mouse.
hypothesis: Chances are about even that either Greg is white, or Bernhard is a frog.
valid_hypothesis: Chances are about even that either Greg is white, or Bernhard is a frog.
invalid_hypothesis: It is highly unlikely that either Greg is white, or Bernhard is a frog.
hypothesis_assertion: Either Greg is white, or Bernhard is a frog.