Young people practice walking on the high wire.
Circus people practicing an act.
Not all young people walking on a high wire are circus people.
exists s1 s2 x1 x2 x3.(n_wire(x3) & a_high(s2) & Theme(s2,x3) & a_topic(x1) & on(x1,x3) & n_practice(x1) & Time(x1,x2) & n_walking(x2) & n_people(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_practice(e1) & n_act(x4) & (x1 = x3) & n_people(x1) & (x1 = x2) & ne_nam_circus(x2))