A group of people at a festival.
The people are eating food at the festival.
Just because a group of people are at a festival does not necessarily mean that the people are eating food.
exists x1 x2 x3.(a_topic(x1) & of(x1,x2) & at(x2,x3) & n_festival(x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_festival(x3) & n_people(x1) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_food(x2))