An elderly man is cooking hotdogs outside.
An old man is celebrating his son's birthday with a grillout outside.
the man may or may not be celebrating his son's birthday.
exists p1 s1 s2 x1.(a_outside(s2) & Manner(p1,s2) & exists s3 x2.((x1 = x2) & n_hotdog(x2) & a_cooking(s3) & Theme(s3,x2)) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4 x5.(with(e1,x4) & n_outside(x4) & of(x4,x5) & n_grillout(x5) & Theme(e1,x3) & Actor(e1,x1) & v_celebrate(e1) & n_birthday(x3) & of(x3,x2) & n_son(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & a_old(s1) & Theme(s1,x1))