There are two guys on motorcycles while a crowd watches on behind a barricade.
Two men are riding motorcycles in front of a crowd.
Answer; Guys and men are same.
exists p1 p2 x1.(exists e1 s1 x4 x5.(behind(e1,x5) & n_barricade(x5) & a_on(s1) & Manner(e1,s1) & Actor(e1,x4) & v_watch(e1) & n_crowd(x4)) & while(p1,p2) & exists x2 x3.((x1 = x2) & on(x2,x3) & n_motorcycle(x3) & n_guy(x2) & card_eq_2(x2)))
exists e1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_crowd(x4) & n_front(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_man(x1) & card_eq_2(x1))