An artist is working on a sculpture in a workshop.
The artist is making a sculpture
If one is working on a sculpture, they are making a sculpture.
exists e1 x1 x2 x3.(in(e1,x3) & n_workshop(x3) & on(e1,x2) & n_sculpture(x2) & Actor(e1,x1) & v_work(e1) & n_artist(x1))
exists e1 x1 x2.(n_artist(x1) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_sculpture(x2))