A group of people sitting outdoors.
The people are having a picnic.
Just because people are sitting outdoors doesn't mean they are having a picnic.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Time(e1,x4) & n_outdoors(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_picnic(x2))