A man sits alone at a table, playing guitar.
A man is playing music.
Playing a guitar implies the playing of music.
exists e2 e1 s1 x1 x2 x3 x4.(at(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_guitar(x4) & (x2 = x3) & n_table(x2) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_music(x2) & n_man(x1))