context: An older, barefoot boy is talking to a younger, shirtless boy in flip flips in the middle of the street.
hypothesis: Chances are about even that an older brother is talking to his younger brother in the middle of the street.
valid_hypothesis: Chances are about even that an older brother is talking to his younger brother in the middle of the street.
invalid_hypothesis: It is certain that an older brother is talking to his younger brother in the middle of the street.
hypothesis_assertion: An older brother is talking to his younger brother in the middle of the street.