context: It is impossible that Bernhard is a frog. There is almost no chance that Bill is in the school. It is almost certain that Sandra got the apple. It is probably the case that if Sandra got the apple, or Bernhard is a frog, then Fred left the football. It is probably not the case that if Sandra got the apple, or Bill is in the school, then Julius is white. There is a very good chance that if Bernhard is a frog, or Sandra got the apple, then John moved to the office.
hypothesis: It is probably the case that bill is in the school, or Fred left the football.
valid_hypothesis: It is probably the case that bill is in the school, or Fred left the football.
invalid_hypothesis: It is unlikely that bill is in the school, or Fred left the football.
hypothesis_assertion: Bill is in the school, or Fred left the football.