context: It is unlikely that John got the apple. It is unlikely that Mary went to the office. There is little chance that Sandra left the football.
hypothesis: We believe that sandra left the football, and John got the apple.
valid_hypothesis: There is almost no chance that sandra left the football, and John got the apple.
invalid_hypothesis: We believe that sandra left the football, and John got the apple.
hypothesis_assertion: Sandra left the football, and John got the apple.