Children are working on a construction project to build a deck.
Children are building a deck
They may be preparing materials or doing planning, and not actively building anything at the moment.
exists e1 p1 x1 x2 x3.(on(e1,x2) & Topic(x2,p1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x2) & v_build(e2) & n_deck(x4)) & n_project(x2) & of(x2,x3) & n_construction(x3) & Actor(e1,x1) & v_work(e1) & n_child(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_deck(x2) & n_child(x1))