Two men are performing, one is singing and both are playing guitars.
The men are playing guitars for a living.
They could be playing guitars because they like to and not for a living.
exists e3 e2 e1 s1 x1 x2 x3 x4.(a_both(s1) & Manner(e3,s1) & Theme(e3,x4) & Actor(e3,x3) & v_play(e3) & n_guitar(x4) & n_thing(x3) & card_eq_1(x3) & Actor(e2,x2) & v_sing(e2) & n_thing(x2) & card_eq_1(x2) & Actor(e1,x1) & v_perform(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_man(x1) & for(e1,x3) & n_living(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2))