context: It is impossible that Bernhard is a rhino. It is probably not the case that John put down the milk. It is impossible that Emily is a mouse. It is unlikely that if Bernhard is a rhino, and Emily is a mouse, then Julius is a frog. Chances are slight that if Emily is a mouse, and John put down the milk, then Greg is a lion. Chances are slight that if Bernhard is a rhino, or Emily is a mouse, then Mary moved to the office.
hypothesis: It is probable that greg is a lion, or Bernhard is a rhino.
valid_hypothesis: It is impossible that greg is a lion, or Bernhard is a rhino.
invalid_hypothesis: It is probable that greg is a lion, or Bernhard is a rhino.
hypothesis_assertion: Greg is a lion, or Bernhard is a rhino.