A marching band is performing on a sunny day.
A great band.
Just because a marching band is performing on a sunny day doesn't make them great.
exists e1 e2 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 s1 x1.(a_topic(x1) & n_band(x1) & a_great(s1) & Theme(s1,x1))