context: It is almost certain that Jessica is a sheep. It is certain that Mary went to the hallway. There is little chance that Lily is white.
hypothesis: It is impossible that either Mary went to the hallway, or Lily is white.
valid_hypothesis: It is highly likely that either Mary went to the hallway, or Lily is white.
invalid_hypothesis: It is impossible that either Mary went to the hallway, or Lily is white.
hypothesis_assertion: Either Mary went to the hallway, or Lily is white.