context: It is highly unlikely that Jessica is a mouse. It is almost certain that Jeff went to the garden. It is likely that Greg is a swan. It is highly unlikely that if either Jeff went to the garden, or Greg is a swan, then John left the apple. It is highly likely that if Jeff went to the garden, and Jessica is a mouse, then Bill got the milk there. It is highly unlikely that if Jessica is a mouse, or Jeff went to the garden, then Brian is white.
hypothesis: It is certain that bill got the milk there, and Greg is a swan.
valid_hypothesis: There is almost no chance that bill got the milk there, and Greg is a swan.
invalid_hypothesis: It is certain that bill got the milk there, and Greg is a swan.
hypothesis_assertion: Bill got the milk there, and Greg is a swan.