This red-haired darling knows how to play those drums.
The guitarist is a teenager.
There can be either a guitarist or one playing drums.
exists e1 s1 x1 x2 x4.(n_drum(x4) & n_darling(x1) & a_red-haired(s1) & Theme(s1,x1) & Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3.(Theme(e2,x4) & Actor(e2,x3) & v_play(e2)))
exists p1 x1.(n_guitarist(x1) & exists x2.((x1 = x2) & n_teenager(x2)))