context: There is little chance that Jessica is a mouse. It is highly unlikely that Jeff went to the garden. There is a very good chance that Brian is a rhino.
hypothesis: It is impossible that jeff went to the garden, and Jessica is a mouse.
valid_hypothesis: It is impossible that jeff went to the garden, and Jessica is a mouse.
invalid_hypothesis: There is a very good chance that jeff went to the garden, and Jessica is a mouse.
hypothesis_assertion: Jeff went to the garden, and Jessica is a mouse.