Campers use coal and a lighter to cook their dinner over a fire.
There is a bear that started a fire in the woods.
bears usually don't start fires but campers do to cook dinner.
exists e1 p1 x1 x2 x3 x4 x5.(Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_use(e1) & exists e2 x6.(Theme(e2,x5) & Actor(e2,x1) & v_cook(e2) & over(x5,x6) & n_fire(x6)) & n_dinner(x5) & of(x5,x1) & n_thing(x1) & subset_of(x4,x2) & n_lighter(x4) & subset_of(x3,x2) & n_coal(x3) & n_camper(x1))
exists p1 x1 x5.(n_wood(x5) & exists e1 x2 x3 x4.((x1 = x2) & in(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_start(e1) & n_fire(x4) & (x2 = x3) & n_bear(x2)))