There is a man with a green t-shirt cooking hamburgers and hotdogs outside on a grill.
A man is having a summer BBQ party.
A man cooking outside is not always having a summer BBQ party.
exists p1 x1 s1 s2 x2 x3 x4 x5 x6 x7 x8.((x1 = x2) & subset_of(x6,x2) & on(x7,x8) & n_grill(x8) & outside(x6,x7) & n_thing(x7) & n_hotdog(x6) & subset_of(x3,x2) & with(x3,x4) & n_hamburger(x4) & of(x4,x5) & n_cooking(x5) & a_t-shirt(s2) & Theme(s2,x4) & a_green(s1) & Theme(s1,x4) & n_man(x3))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_party(x2) & (x2 = x4) & ne_org_bbq(x4) & of(x2,x3) & n_summer(x3) & n_man(x1))