A man plays guitar for a woman and a young boy.
A man plays the piano for strangers.
The man can't play the guitar and piano at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(for(e1,x3) & subset_of(x5,x3) & n_boy(x5) & a_young(s1) & Theme(s1,x5) & subset_of(x4,x3) & n_woman(x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_piano(x2) & for(e1,x3) & n_stranger(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))