A male with a beard is playing a guitar.
The man is playing the guitar.
The man is playing the guitar is just rephrased from a male with a beard is playing guitar.
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 x1 x2.(n_guitar(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))