A group of people are having a picnic at the park.
There are people drinking wine at a picnic at the park.
Just because people are having a picnic it does not mean people are having wine.
exists e1 x1 x2 x3 x4.(n_park(x4) & at(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_picnic(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1 x6.(n_park(x6) & exists e1 x2 x3 x4 x5.((x1 = x2) & at(e1,x6) & at(e1,x5) & n_picnic(x5) & Time(e1,x4) & n_wine(x4) & Actor(e1,x3) & v_drink(e1) & (x2 = x3) & n_people(x2)))