A man sitting at a table playing a an acoustic guitar.
A man is playing the drums.
One cannot play an acoustic guitar and drums at the same time.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & at(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_play(e2) & Time(x5,x6) & n_a(x6) & n_guitar(x5) & a_acoustic(s1) & Theme(s1,x5) & (x3 = x4) & n_table(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_drum(x2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))