A captain checks the life vests of his passengers.
Two kids play in the living room with a ball.
A captain cannot become two kids
exists e1 x1 x2 x3 x4.(n_passenger(x4) & of(x4,x2) & n_male(x2) & n_vest(x2) & of(x2,x3) & n_life(x3) & Theme(e1,x2) & Actor(e1,x1) & v_check(e1) & of(x2,x4) & n_captain(x1))
exists e1 x1 x2 x3 x4.(n_room(x2) & of(x2,x3) & n_living(x3) & in(e1,x2) & with(x2,x4) & n_ball(x4) & Actor(e1,x1) & v_play(e1) & n_kid(x1) & card_eq_2(x1))