A male with a beard is playing a guitar.
An adult is singing an original song.
There is no indication that the male is an adult and no way of knowing if the male is singing while he is playing guitar nor whether he is singing an original song.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_guitar(x3) & with(x1,x2) & n_beard(x2) & n_male(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_sing(e1) & n_song(x2) & a_original(s1) & Theme(s1,x2) & n_adult(x1))