context: It is highly likely that Julius is yellow. Chances are about even that Brian is a swan. It is almost certain that Bernhard is a frog. There is a better than even chance that if Julius is yellow, or Bernhard is a frog, then Jeff discarded the milk. It is impossible that if either Julius is yellow, or Brian is a swan, then Greg is green. It is probably the case that if either Julius is yellow, or Bernhard is a frog, then Mary went to the garden.
hypothesis: It is highly likely that either Mary went to the garden, or Bernhard is a frog.
valid_hypothesis: It is highly likely that either Mary went to the garden, or Bernhard is a frog.
invalid_hypothesis: It is probably not the case that either Mary went to the garden, or Bernhard is a frog.
hypothesis_assertion: Either Mary went to the garden, or Bernhard is a frog.