A bald man wearing white is sitting on the ground playing a sitar.
A man plays the trombone.
You cannot play a sitar and a trombone simultaneously.
exists e3 e1 e2 s1 s2 x1 x2 x3 x4 x5.(n_ground(x3) & on(e2,x3) & Theme(e3,x5) & Actor(e3,x4) & v_play(e3) & n_sitar(x5) & (x3 = x4) & Actor(e2,x1) & v_sit(e2) & a_white(s2) & Manner(e1,s2) & Actor(e1,x2) & v_wear(e1) & (x1 = x2) & n_man(x1) & a_bald(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_trombone(x2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))