A young overlooks a city street from a balcony.
There is no balcony.
It say they are looking from a balcony ,then that there is no balcony.
all x1 x2.((n_street(x1) & of(x1,x2) & n_city(x2)) -> exists s1 x3 x4.(a_topic(x3) & from(x3,x4) & n_balcony(x4) & for(x3,x1) & n_overlook(x3) & a_young(s1) & Theme(s1,x3)))
exists p1 x1.-exists x2.((x1 = x2) & n_balcony(x2))