An artist in a black sweater is sculpting large rocks.
A painter paints a house.
Painting and sculpting are two different actions; an artist cannot do both actions at once.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_sculpt(e1) & n_rock(x3) & a_large(s2) & Theme(s2,x3) & in(x1,x2) & n_sweater(x2) & a_black(s1) & Theme(s1,x2) & n_artist(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_paint(e1) & n_house(x2) & n_painter(x1))