A teenage boy has a silver ring protruding from his nose.
A teenage boy at a concert.
Just because a teenage boy has a silver ring protruding from his nose, it does not mean he is at a concert.
exists e2 e1 x1 x2 x3 x4 x5 x6.(Theme(e2,x3) & Actor(e2,x1) & v_have(e2) & from(e1,x6) & n_nose(x6) & of(x6,x1) & n_male(x1) & Actor(e1,x5) & v_protrude(e1) & (x3 = x5) & n_ring(x3) & of(x3,x4) & n_silver(x4) & n_boy(x1) & of(x1,x2) & n_teenage(x2))
exists x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_concert(x3) & n_boy(x1) & of(x1,x2) & n_teenage(x2))