a man walks across the tightrope.
A tightrope walker is doing his thing.
The man who walks is a walker
exists e1 x1 x2.(n_tightrope(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_thing(x3) & of(x3,x1) & n_male(x1) & n_walker(x1) & of(x1,x2) & n_tightrope(x2))