A young boy is cooking lunch on the grill.
A child is learning how to use a grill.
A person cooking lunch on a grill doesn't mean he is learning how to do it for the first time.
exists p1 s1 x1 x3.(n_grill(x3) & exists s2 x2.((x1 = x2) & on(x2,x3) & n_lunch(x2) & a_cooking(s2) & Theme(s2,x2)) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_use(e2) & n_grill(x4)) & n_child(x1))