context: A person is squatting down near buckets, holding something in one hand.
hypothesis: It is probable that someone is dipping a sponge in a bucket of soapy water.
valid_hypothesis: It is improbable that someone is dipping a sponge in a bucket of soapy water.
invalid_hypothesis: It is probable that someone is dipping a sponge in a bucket of soapy water.
hypothesis_assertion: Someone is dipping a sponge in a bucket of soapy water.