A singer on a stage is singing into a microphone.
The person is playing the drums for a friend.
singing and playing drums are different actions
exists e1 x1 x2 x3.(into(e1,x3) & n_microphone(x3) & Actor(e1,x1) & v_sing(e1) & on(x1,x2) & n_stage(x2) & n_singer(x1))
exists e1 x1 x2 x3.(n_drum(x2) & n_person(x1) & for(e1,x3) & n_friend(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))