context: There is little chance that Sandra got the football. There is little chance that Yann is tired. It is probable that Fred is in the school. It is likely that if Sandra got the football, or Yann is tired, then Greg is yellow. It is unlikely that if either Sandra got the football, or Fred is in the school, then Mary picked up the apple. It is almost certain that if Sandra got the football, and Yann is tired, then Emily is a mouse.
hypothesis: We believe that sandra got the football, and Fred is in the school.
valid_hypothesis: It is highly unlikely that sandra got the football, and Fred is in the school.
invalid_hypothesis: We believe that sandra got the football, and Fred is in the school.
hypothesis_assertion: Sandra got the football, and Fred is in the school.