A group of boys are building something with wood.
The girls are welding metal for a car body.
There can either be a group of boys or girls.
exists e1 x1 x2 x3 x4.(with(e1,x4) & n_wood(x4) & Theme(e1,x3) & Actor(e1,x1) & v_build(e1) & n_thing(x3) & of(x1,x2) & n_boy(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(n_girl(x1) & for(e1,x3) & n_body(x3) & of(x3,x4) & n_car(x4) & Theme(e1,x2) & Actor(e1,x1) & v_weld(e1) & n_metal(x2))