Musicians play near a concrete wall.
There is silence in the city.
Play and silence are different.
exists s1 x1 x2 x3.(a_topic(x1) & near(x1,x3) & n_wall(x3) & a_concrete(s1) & Theme(s1,x3) & n_play(x1) & (x1 = x2) & ne_nam_musicians(x2))
exists p1 x1 x3.(n_city(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_silence(x2)))