A band playing cello's outside in front of a group of people.
A gathering of people are at an event.
A band is playing and hence people gathered in front of it.
exists e1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & in(e1,x5) & of(x5,x6) & of(x6,x7) & n_people(x7) & n_group(x6) & n_front(x5) & Theme(e1,x4) & Actor(e1,x2) & v_play(e1) & n_outside(x4) & of(x4,x3) & n_cello(x3) & (x1 = x2) & n_band(x1))
exists p1 x1 x2.(exists x3.(at(x1,x3) & n_event(x3)) & of(x1,x2) & n_people(x2) & n_gathering(x1))