context: It is probably the case that Mary went to the kitchen. There is little chance that Lily is a swan. It is impossible that Brian is a swan.
hypothesis: It is likely that either Mary went to the kitchen, or Lily is a swan.
valid_hypothesis: It is likely that either Mary went to the kitchen, or Lily is a swan.
invalid_hypothesis: It is impossible that either Mary went to the kitchen, or Lily is a swan.
hypothesis_assertion: Either Mary went to the kitchen, or Lily is a swan.