context: It is highly unlikely that John took the apple. It is improbable that Mary went to the office. It is probably the case that Sandra left the milk. It is highly likely that if John took the apple, and Mary went to the office, then Jessica is a mouse. It is highly unlikely that if either Sandra left the milk, or John took the apple, then Julius is a rhino. Chances are slight that if John took the apple, and Sandra left the milk, then Brian is a lion.
hypothesis: It is highly unlikely that either Jessica is a mouse, or Sandra left the milk.
valid_hypothesis: It is probably the case that either Jessica is a mouse, or Sandra left the milk.
invalid_hypothesis: It is highly unlikely that either Jessica is a mouse, or Sandra left the milk.
hypothesis_assertion: Either Jessica is a mouse, or Sandra left the milk.