Several people in a restaurant.
People are eating dinner.
Just because several people are in a restaurant doesn't mean they are all eating dinner.
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_restaurant(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_dinner(x2) & n_people(x1))