context: A man smiles while he shaves the head of another man.
hypothesis: It is likely that a man is donating hair to a charity for cancer patients.
valid_hypothesis: It is improbable that a man is donating hair to a charity for cancer patients.
invalid_hypothesis: It is likely that a man is donating hair to a charity for cancer patients.
hypothesis_assertion: A man is donating hair to a charity for cancer patients.