A man is singing into a microphone.
A man is singing the national anthem into a microphone at a crowded stadium.
Not all songs are the national anthem, and not every man singing into a microphone is at a crowded stadium.
exists e1 x1 x2.(into(e1,x2) & n_microphone(x2) & Actor(e1,x1) & v_sing(e1) & n_man(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_anthem(x2) & a_national(s1) & Theme(s1,x2) & at(e1,x4) & n_stadium(x4) & a_crowded(s2) & Theme(s2,x4) & into(e1,x3) & n_microphone(x3) & Theme(e1,x2) & Actor(e1,x1) & v_sing(e1) & n_man(x1))