a man walks across the tightrope.
A man focuses on moving across a tightrope.
Focuses on moving across means he is walking across
exists e1 x1 x2.(n_tightrope(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists e1 e2 x1 x2 x3.(on(e1,e2) & across(e2,x3) & n_tightrope(x3) & Actor(e2,x2) & v_move(e2) & Actor(e1,x1) & v_focus(e1) & n_man(x1))