A band walking down the street.
The band is performing.
You can not infer they are performing.
exists e1 x1 x2 x3.(n_street(x3) & a_topic(x1) & down(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_band(x1))
exists e1 x1.(n_band(x1) & Actor(e1,x1) & v_perform(e1))