Three people are cooking outside using Two gas grills.
Three friends are having a vegetarian barbeque party.
We can not say that these three people are friends, nor do we know if they are having a vegetarian barbecue party.
exists e1 e2 s1 x1 x2 x3.(for(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_use(e2) & n_grill(x2) & of(x2,x3) & n_gas(x3) & card_eq_2(x2) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_cook(e1) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_party(x2) & of(x2,x4) & n_barbeque(x4) & of(x2,x3) & n_vegetarian(x3) & n_friend(x1) & card_eq_3(x1))