A crowd has gathered to watch the Summer Concert Series.
The summer concert is a very popular event.
Any event at which a crowd has gathered is very popular.
exists e1 p1 x1 x2 x3 x4.(ne_org_series(x2) & (x2 = x4) & ne_org_concert(x4) & (x2 = x3) & ne_org_summer(x3) & Topic(e1,p1) & Actor(e1,x1) & v_gather(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_watch(e2)) & n_crowd(x1))
exists p1 x1 x2.(n_concert(x1) & of(x1,x2) & n_summer(x2) & exists s1 x3.((x1 = x3) & n_event(x3) & a_popular(s1) & Theme(s1,x3) & r_very(x3)))