a young children hanging upside at the playground
The children are in class.
Playground is not a class in a classroom
exists e1 s1 s2 x1 x2 x3.(n_playground(x3) & a_topic(x1) & at(e1,x3) & a_upside(s2) & Manner(e1,s2) & Actor(e1,x2) & v_hang(e1) & (x1 = x2) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1.(n_child(x1) & exists x2.(in(x1,x2) & n_class(x2)))