The lady with the cane is sitting on a bench.
An old woman sits on a bench.
A young woman could possibly use a cane so she is not necessarily old.
exists e1 x1 x2 x3.(n_cane(x2) & n_lady(x1) & on(e1,x3) & n_bench(x3) & Actor(e1,x1) & v_sit(e1) & with(x1,x2))
exists e1 s1 x1 x2.(on(e1,x2) & n_bench(x2) & Actor(e1,x1) & v_sit(e1) & n_woman(x1) & a_old(s1) & Theme(s1,x1))