context: There is almost no chance that Mary went to the office. Chances are slight that Bernhard is a swan. It is probable that Yann is thirsty. We doubt that if Bernhard is a swan, or Yann is thirsty, then Julius is a frog. Chances are about even that if Bernhard is a swan, and Yann is thirsty, then Bill dropped the milk. There is a better than even chance that if either Bernhard is a swan, or Yann is thirsty, then Greg is a rhino.
hypothesis: There is almost no chance that greg is a rhino, or Bill dropped the milk.
valid_hypothesis: Chances are about even that greg is a rhino, or Bill dropped the milk.
invalid_hypothesis: There is almost no chance that greg is a rhino, or Bill dropped the milk.
hypothesis_assertion: Greg is a rhino, or Bill dropped the milk.