Three men grilling on a front porch.
Three men are cooking lunch outside.
Grilling does not necessarily imply cooking lunch in particular.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_porch(x3) & a_front(s1) & Theme(s1,x3) & Actor(e1,x2) & v_grill(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))
exists p1 x1.(exists s1 x2 x3.((x1 = x2) & n_outside(x2) & of(x2,x3) & n_lunch(x3) & a_cooking(s1) & Theme(s1,x2)) & n_man(x1) & card_eq_3(x1))