Two men walking their bikes.
The men are outdoors.
walking their bikes shows that they are outdoors.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_bike(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_outdoors(x2)))