Teenagers having a barbecue in the park grilling some food.
A group of teens are cooking out at an outdoor party.
A barbecue in the park isn't always an outdoor party.
exists e2 e1 x1 x2 x3 x4 x5.(n_park(x3) & ne_nam_teenagers(x1) & Theme(e2,x2) & Actor(e2,x1) & v_have(e2) & in(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_grill(e1) & n_food(x5) & (x3 = x4) & n_barbecue(x2))
exists e1 s1 s2 x1 x2 x3.(at(e1,x3) & n_party(x3) & a_outdoor(s2) & Theme(s2,x3) & a_out(s1) & Manner(e1,s1) & Actor(e1,x1) & v_cook(e1) & of(x1,x2) & n_teens(x2) & n_group(x1))