Sidewalk with reduce speed sign on the left.
A car is slowing for the street sign.
The simple fact that there is a reduce speed sign does not necessarily imply a car is slowing for it.
exists s1 x1 x2 x3 x4.(n_left(x4) & a_topic(x1) & with(x1,x2) & on(x2,x4) & n_sign(x2) & of(x2,x3) & n_speed(x3) & a_reduce(s1) & Theme(s1,x2) & n_sidewalk(x1))
exists e1 x1 x2 x3.(n_sign(x2) & of(x2,x3) & n_street(x3) & for(e1,x2) & Actor(e1,x1) & v_slow(e1) & n_car(x1))