young boys at soccer practice
The boys are on a team.
The boys at soccer practice are necessarily on a team.
exists s1 x1 x2 x3.(a_topic(x1) & at(x1,x2) & n_practice(x2) & of(x2,x3) & n_soccer(x3) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1.(n_boy(x1) & exists x2.(on(x1,x2) & n_team(x2)))