A worker using a saw to carve into ice.
a person carving ice for a competition
Just because you carve into ice doesn't imply a competition.
exists e1 p1 x1 x2 x3.(a_topic(x1) & Theme(e1,p1) & Recipient(e1,x3) & Actor(e1,x2) & v_use(e1) & exists e2 x4.(into(e2,x4) & n_ice(x4) & Actor(e2,x2) & v_carve(e2)) & n_saw(x3) & (x1 = x2) & n_worker(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_carve(e1) & for(x3,x4) & n_competition(x4) & n_ice(x3) & (x1 = x2) & n_person(x1))