Two men are standing together, and one man is holding a cane.
An elderly father and son are standing together
Just because the man is holding a cane doesn't mean he is elderly. Also cannot assume that they are father and son just because they stand next to each other.
exists e2 e1 s1 x1 x2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_hold(e2) & n_cane(x3) & n_man(x2) & card_eq_1(x2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_son(x3) & n_father(x2) & of(x2,x4) & n_elderly(x4) & subset_of(x3,x1) & subset_of(x2,x1))