premise: A professional swimmer spits water out after surfacing while grabbing the hand of someone helping him back to land.
hypothesis: A person is swimming.
explanation_1: the person surfacing is swimming
explanation_2: A swimmer who spits water out after surfacing implies this person is swimming.
explanation_3: A person is a professional swimmer
premise_logic: exists e2 e1 e3 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_male(x6) & n_hand(x6) & a_topic(x1) & while(e1,e3) & Theme(e3,x6) & Actor(e3,x5) & v_grab(e3) & of(x6,x7) & to(e2,x9) & n_land(x9) & r_back(e2) & Theme(e2,x6) & Actor(e2,x8) & v_help(e2) & (x7 = x8) & n_person(x7) & after(x4,e1) & Actor(e1,x5) & v_surface(e1) & n_thing(x5) & out(x1,x4) & n_thing(x4) & n_water(x1) & of(x1,x3) & n_spit(x3) & of(x1,x2) & n_swimmer(x2) & a_professional(s1) & Theme(s1,x1))
hypothesis_logic: exists p1 x1.(exists x2.((x1 = x2) & n_swimming(x2)) & n_person(x1))