context: There is little chance that Sandra grabbed the apple. It is improbable that Mary went to the kitchen. Chances are about even that Emily is a cat.
hypothesis: It is impossible that either Emily is a cat, or Mary went to the kitchen.
valid_hypothesis: Chances are about even that either Emily is a cat, or Mary went to the kitchen.
invalid_hypothesis: It is impossible that either Emily is a cat, or Mary went to the kitchen.
hypothesis_assertion: Either Emily is a cat, or Mary went to the kitchen.