context: It is unlikely that Daniel dropped the milk. It is probably the case that Mary got the football. It is certain that Bernhard is a lion. It is unlikely that if either Daniel dropped the milk, or Bernhard is a lion, then Brian is white. It is highly likely that if Bernhard is a lion, or Daniel dropped the milk, then John went to the garden. It is likely that if Daniel dropped the milk, or Bernhard is a lion, then Lily is a swan.
hypothesis: It is highly likely that either Mary got the football, or John went to the garden.
valid_hypothesis: It is probably not the case that either Mary got the football, or John went to the garden.
invalid_hypothesis: It is highly likely that either Mary got the football, or John went to the garden.
hypothesis_assertion: Either Mary got the football, or John went to the garden.