context: It is probably not the case that Greg is a swan. We believe that Bernhard is a frog. There is a very good chance that Emily is a sheep. It is probably the case that if Emily is a sheep, or Bernhard is a frog, then Lily is yellow. There is a better than even chance that if Greg is a swan, and Bernhard is a frog, then Brian is a rhino. It is highly likely that if either Greg is a swan, or Bernhard is a frog, then Mary went to the garden.
hypothesis: There is a better than even chance that either Brian is a rhino, or Lily is yellow.
valid_hypothesis: There is a better than even chance that either Brian is a rhino, or Lily is yellow.
invalid_hypothesis: It is impossible that either Brian is a rhino, or Lily is yellow.
hypothesis_assertion: Either Brian is a rhino, or Lily is yellow.