A musician is giving a concert to fans.
A group of people is standing in front of the stage.
Just because a musician is giving a concert to fans doesn't mean people are standing in front of the stage.
exists e1 x1 x2 x3.(to(e1,x3) & n_fan(x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_concert(x2) & n_musician(x1))
exists e1 x1 x2 x3 x4.(n_stage(x4) & in(e1,x3) & of(x3,x4) & n_front(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))