A man is playing an acoustic guitar.
There is a woman playing a cello outside in a field.
The person is either a man or a woman, and must be playing either the guitar or the cello.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & a_acoustic(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1 e1 x2 x3 x4 x5 x6.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & in(x4,x6) & n_field(x6) & n_outside(x4) & of(x4,x5) & n_cello(x5) & (x2 = x3) & n_woman(x2))