context: It is certain that Daniel left the apple. It is certain that Mary went to the office. It is certain that Bernhard is a lion. Chances are about even that if Bernhard is a lion, and Mary went to the office, then Emily is a mouse. It is probable that if Mary went to the office, or Bernhard is a lion, then Julius is a frog. It is likely that if either Mary went to the office, or Daniel left the apple, then Greg is a rhino.
hypothesis: It is certain that daniel left the apple, or Mary went to the office.
valid_hypothesis: It is certain that daniel left the apple, or Mary went to the office.
invalid_hypothesis: It is impossible that daniel left the apple, or Mary went to the office.
hypothesis_assertion: Daniel left the apple, or Mary went to the office.