Group of people sitting at a restaurant.
A group of people are having a picnic in the park.
it cannot be either restaurant or picnic
exists e1 s1 x1 x2 x3.(ne_org_group(s1) & a_topic(s1) & of(s1,x1) & at(e1,x3) & n_restaurant(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3 x4.(n_park(x4) & in(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_picnic(x3) & of(x1,x2) & n_people(x2) & n_group(x1))