A musician is giving a concert to fans.
The musician is playing folk music at a concert.
A musician giving a concert is not necessarily playing folk music.
exists e1 x1 x2 x3.(to(e1,x3) & n_fan(x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_concert(x2) & n_musician(x1))
exists e1 x1 x2 x3 x4.(n_musician(x1) & at(e1,x4) & n_concert(x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_music(x2) & of(x2,x3) & n_folk(x3))