A jazz band playing at a jazz festival.
A heavy metal band is crowd surfing instead of playing music.
Jazz bands are not usually also a heavy metal band. If a band is playing they are not nornally crowd surfing at the same time.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x4) & n_festival(x4) & of(x4,x5) & n_jazz(x5) & Actor(e1,x3) & v_play(e1) & (x1 = x3) & n_band(x1) & of(x1,x2) & n_jazz(x2))
exists p1 s1 x1 x2.(exists e1 x3 x4 x5.((x1 = x3) & -exists e2 x6 x7.(Theme(e2,x7) & Actor(e2,x6) & v_play(e2) & n_music(x7) & (x3 = x6)) & Theme(e1,x5) & Actor(e1,x4) & v_surf(e1) & n_music(x5) & (x3 = x4) & n_crowd(x3)) & n_band(x1) & of(x1,x2) & n_metal(x2) & a_heavy(s1) & Theme(s1,x1))