Two men are playing guitars.
Two men are strumming guitars.
Two men are playing guitars by strumming.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_strum(e1) & n_guitar(x2) & n_man(x1) & card_eq_2(x1))