Several people in a restaurant.
People inside.
If the people are in a restaurant they are inside.
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_restaurant(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists x1.(a_topic(x1) & r_inside(x1) & n_people(x1))