Several people, sitting in a park on the grass, grilling.
There are people outside.
group of people are outside
exists e1 e2 s1 x1 x2 x3 x4.(n_grass(x4) & Actor(e2,x1) & v_grill(e2) & on(e1,x4) & in(e1,x3) & n_park(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists p1 s1 x1.(a_outside(s1) & Manner(p1,s1) & exists x2.((x1 = x2) & n_people(x2)))