Two men are sitting on their bikes, surrounded by a crowd.
The two men are surrounded by people.
Answer; People refers to the crowd.
exists e2 e1 x1 x2 x3 x4.(on(e1,x2) & Actor(e2,x4) & n_crowd(x4) & Theme(e2,x3) & v_surround(e2) & (x2 = x3) & n_bike(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_man(x1) & card_eq_2(x1) & Actor(e1,x2) & n_people(x2) & Theme(e1,x1) & v_surround(e1))