context: It is improbable that Greg is a frog. It is highly unlikely that Daniel left the apple. There is a very good chance that Sandra got the football. It is unlikely that if either Sandra got the football, or Greg is a frog, then Brian is green. There is little chance that if either Sandra got the football, or Daniel left the apple, then Bernhard is white. There is little chance that if Sandra got the football, or Greg is a frog, then Mary went to the hallway.
hypothesis: We doubt that either Sandra got the football, or Greg is a frog.
valid_hypothesis: We believe that either Sandra got the football, or Greg is a frog.
invalid_hypothesis: We doubt that either Sandra got the football, or Greg is a frog.
hypothesis_assertion: Either Sandra got the football, or Greg is a frog.