Two men standing on the top of a boat.
Men are standing on a boat
"On a boat "is rephrasing "on the top of the boat".
exists e1 x1 x2 x3 x4.(n_top(x3) & a_topic(x1) & on(e1,x3) & of(x3,x4) & n_boat(x4) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(on(e1,x2) & n_boat(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))