context: It is likely that Yann is bored. It is likely that Mary went to the garden. Chances are slight that Brian is a swan.
hypothesis: Chances are about even that either Mary went to the garden, or Yann is bored.
valid_hypothesis: Chances are about even that either Mary went to the garden, or Yann is bored.
invalid_hypothesis: There is almost no chance that either Mary went to the garden, or Yann is bored.
hypothesis_assertion: Either Mary went to the garden, or Yann is bored.