premise: Two young blond women wearing summer dresses talk to a young blond man wearing a dress navy uniform, in front of a battleship. hypothesis: Two sisters welcome their sailor brother home from overseas service at Norfolk naval station.
entailment: It doesn't give indication that they are the same people, but you can infer that they are because the first sentence speaks of two women welcoming a navy soldier home while the second says two sisters welcome their navy brother home. The second sentence mainly implies their relationship.