A man at a park is taking pictures.
The man is taking pictures at the park to build a portfolio for a photography career.
The man might be taking pictures for pleasure and  not to  build a portfolio for a photography career./
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_picture(x3) & at(x1,x2) & n_park(x2) & n_man(x1))
exists e1 p1 x1 x2 x3.(n_park(x3) & n_man(x1) & Topic(e1,p1) & exists e2 s1 x4 x5.(for(e2,x5) & n_career(x5) & a_photography(s1) & Theme(s1,x5) & Theme(e2,x4) & Actor(e2,x1) & v_build(e2) & n_portfolio(x4)) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2))