An elder man with a cane takes a walk in a valley by himself.
The elderly man is eighty years old.
There is nothing mentioned about his age - he may not be eighty years old.
exists e1 x1 x2 x3 x4 x5.(by(e1,x1) & n_male(x1) & in(e1,x5) & n_valley(x5) & Theme(e1,x4) & Actor(e1,x1) & v_take(e1) & n_walk(x4) & with(x1,x3) & n_cane(x3) & n_man(x1) & of(x1,x2) & n_elder(x2))
exists e1 s1 x1 x2.(n_man(x1) & a_elderly(s1) & Theme(s1,x1) & Theme(e1,x2) & Pivot(e1,x1) & r_more(e1) & v_old(e1) & n_year(x2) & card_eq_80(x2))