A man is playing an electric guitar, while another man is playing another instrument.
A man is cooking, while another man is preparing drinks.
A man cannot be playing the guitar while cooking.
exists e1 p1 s1 x1 x2 x4.(n_instrument(x4) & exists e2 x3 x5.(Theme(e2,x5) & Actor(e2,x3) & v_play(e2) & n_instrument(x5) & -(x5 = x4) & n_man(x3) & -(x3 = x1)) & n_man(x1) & n_man(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & a_electric(s1) & Theme(s1,x2))
exists p1 s1 x1.(exists e1 x2 x3.(Theme(e1,x3) & Actor(e1,x2) & v_prepare(e1) & n_drink(x3) & n_man(x2) & -(x2 = x1)) & n_man(x1) & n_man(x1) & while(s1,p1) & Theme(s1,x1) & a_cooking(s1))