A group of people running of the sand dune at the beach.
The people are eating at a restaurant.
One cannot be running up a dune and inside a restaurant simultaneously.
exists e1 x1 x2 x3 x4 x5 x6.(n_beach(x6) & n_dune(x4) & of(x4,x5) & n_sand(x5) & a_topic(x1) & of(x1,x2) & of(e1,x4) & at(x4,x6) & Actor(e1,x3) & v_run(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_people(x1) & at(e1,x2) & n_restaurant(x2) & Actor(e1,x1) & v_eat(e1))