A guitarist tuning his electric guitar on the set of what appears to be a television program.
A guitarist is practicing the drums.
One cannot be tuning his electric guitar and practicing the drums at the same time.
exists s1 x1 x2 x3 x4.(n_set(x4) & a_topic(x1) & exists e2 e1 p1 x5.(n_thing(x5) & Theme(e2,x3) & Actor(e2,x2) & v_tune(e2) & on(x3,x4) & of(x4,x5) & Topic(e1,p1) & Actor(e1,x5) & v_appear(e1) & exists p2 x6 x7.((x5 = x6) & n_program(x6) & of(x6,x7) & n_television(x7))) & n_guitar(x3) & a_electric(s1) & Theme(s1,x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_guitarist(x1))
exists e1 x1 x2.(n_drum(x2) & Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_guitarist(x1))