An elderly man working with several lines of string.
The man is painting a picture.
The man cannot be working with string and painting a picture at the same time.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & with(e1,x3) & of(x3,x4) & n_string(x4) & n_line(x3) & a_several(s2) & Theme(s2,x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_paint(e1) & n_picture(x2))