premise: Four men riding in a gray, fast moving boat appear to be wearing vests.
hypothesis: Four men ride in a fast boat.
explanation_1: They ride in a a boat because they are riding in a fast moving boat.
explanation_2: it is a rephrasing of the same info four men, ride, fast boat
explanation_3: Four men are in a fast boat
premise_logic: exists e2 e3 e1 p1 s1 s2 s3 x1 x2 x3.(Topic(e3,p1) & Actor(e3,x1) & v_appear(e3) & exists e4 x4.(Theme(e4,x4) & Actor(e4,x1) & v_wear(e4) & n_vest(x4)) & in(e1,x3) & n_boat(x3) & Actor(e2,x3) & v_move(e2) & a_fast(s3) & Theme(s3,x3) & a_,(s2) & Theme(s2,x3) & a_gray(s1) & Theme(s1,x3) & Actor(e1,x2) & v_ride(e1) & (x1 = x2) & n_man(x1) & card_eq_4(x1))
hypothesis_logic: exists e1 s1 x1 x2.(in(e1,x2) & n_boat(x2) & a_fast(s1) & Theme(s1,x2) & Actor(e1,x1) & v_ride(e1) & n_man(x1) & card_eq_4(x1))