context: There is a better than even chance that Greg is a swan. We doubt that Jeff moved to the office. There is almost no chance that Winona is a mouse. It is probably not the case that if Jeff moved to the office, and Winona is a mouse, then Julius is yellow. There is almost no chance that if Greg is a swan, or Jeff moved to the office, then Brian is a lion. It is highly likely that if Jeff moved to the office, or Greg is a swan, then Lily is green.
hypothesis: There is a better than even chance that brian is a lion, or Greg is a swan.
valid_hypothesis: There is a better than even chance that brian is a lion, or Greg is a swan.
invalid_hypothesis: It is highly unlikely that brian is a lion, or Greg is a swan.
hypothesis_assertion: Brian is a lion, or Greg is a swan.