A marching band is performing on a sunny day.
A group performing
marching band implies group
exists e2 e1 s1 x1 x2.(on(e2,x2) & n_day(x2) & a_sunny(s1) & Theme(s1,x2) & Actor(e2,x1) & v_perform(e2) & n_band(x1) & Actor(e1,x1) & v_march(e1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_group(x1))