context: There is almost no chance that Bernhard is a frog. It is impossible that Mary put down the apple. Chances are about even that Lily is a lion. It is certain that if Mary put down the apple, and Bernhard is a frog, then Emily is a mouse. It is certain that if either Mary put down the apple, or Bernhard is a frog, then Julius is a swan. It is probably the case that if Bernhard is a frog, and Lily is a lion, then John went to the hallway.
hypothesis: It is certain that julius is a swan, or Lily is a lion.
valid_hypothesis: Chances are about even that julius is a swan, or Lily is a lion.
invalid_hypothesis: It is certain that julius is a swan, or Lily is a lion.
hypothesis_assertion: Julius is a swan, or Lily is a lion.