Two people wearing life jackets while seated on a boat.
There are two men wearing life jackets.
People does not imply men.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(e1,x6) & n_boat(x6) & while(e1,x5) & n_seat(x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jacket(x3) & of(x3,x4) & n_life(x4) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & n_jacket(x2) & of(x2,x4) & n_life(x4) & Actor(e1,x2) & v_wear(e1) & of(x2,x3) & n_man(x3) & card_eq_2(x2))