a man walks across the tightrope.
a man falls from a tightrope to his death while his family watches.
Walking across a tightrope and falling from a tightrope are two different actions.
exists e1 x1 x2.(n_tightrope(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(while(e1,x4) & n_watch(x4) & of(x4,x5) & n_family(x5) & of(x4,x1) & n_male(x1) & n_male(x1) & from(e1,x2) & to(x2,x3) & n_death(x3) & of(x3,x1) & n_tightrope(x2) & Actor(e1,x1) & v_fall(e1) & n_man(x1))