A band performing on stage while the crowd observes with there hands in the air.
The band is a rock band playing for the crowd.
The band could be some type other than rock.
exists e1 p1 x1 x2 x3 x4 x7.(n_air(x7) & n_crowd(x4) & a_topic(x1) & exists e2 x5 x6.(in(e2,x7) & with(e2,x6) & Theme(e2,x5) & Actor(e2,x4) & v_observe(e2) & n_hand(x5)) & while(e1,p1) & on(e1,x3) & n_stage(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_band(x1))
exists p1 x1 x5.(n_crowd(x5) & n_band(x1) & exists x2 x3 x4.((x1 = x2) & for(x2,x5) & n_playing(x2) & of(x2,x4) & n_band(x4) & of(x2,x3) & n_rock(x3)))