A sculptor is carving stone.
A sculptor is carving fast
No way to know that he is carving fast.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_carve(e1) & n_stone(x2) & n_sculptor(x1))
exists e1 s1 x1.(a_fast(s1) & Manner(e1,s1) & Actor(e1,x1) & v_carve(e1) & n_sculptor(x1))