A rock band is playing for a crowd.
A rock band is playing a cover of a country song.
A rock band may not be playing country music when preforming for a crowd.
exists e1 x1 x2 x3.(for(e1,x3) & n_crowd(x3) & Actor(e1,x1) & v_play(e1) & n_band(x1) & of(x1,x2) & n_rock(x2))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & of(x3,x4) & n_song(x4) & of(x4,x5) & n_country(x5) & n_cover(x3) & n_band(x1) & of(x1,x2) & n_rock(x2))