A bad storm is slowing traffic on a busy city street.
The traffic is caused by rain.
The fact that a bad storm is slowing traffic does not mean the traffic is caused by the rain.
exists e1 s1 s2 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_slow(e1) & on(x2,x3) & n_street(x3) & of(x3,x4) & n_city(x4) & a_busy(s2) & Theme(s2,x3) & n_traffic(x2) & n_storm(x1) & a_bad(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_traffic(x1) & Actor(e1,x2) & n_rain(x2) & Theme(e1,x1) & v_cause(e1))