A graffiti artist is spray painting bricks.
Someone is fixing a car.
fixing and painting are two different kind of action
exists p1 x1 x2.(exists s1 x3 x4.((x1 = x3) & Time(x3,x4) & n_brick(x4) & n_painting(x3) & a_spray(s1) & Theme(s1,x3)) & n_artist(x1) & of(x1,x2) & n_graffitus(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fix(e1) & n_car(x2) & n_person(x1))