A man in glasses sings into a microphone under green lights.
The man wearing glasses is singing.
A man in glasses is the same as a man wearing glasses and sings means is singing.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & into(x1,x4) & under(x4,x5) & n_light(x5) & a_green(s1) & Theme(s1,x5) & n_microphone(x4) & in(x1,x2) & n_sing(x2) & of(x2,x3) & n_glass(x3) & n_man(x1))
exists e1 e2 x1 x2 x3.(n_man(x1) & Actor(e2,x1) & v_sing(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_glass(x3) & (x1 = x2))