Two people sitting on a red bench in front of books.
These people are sitting
These people would infer more than one person, so two is fine.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x4) & of(x4,x5) & n_book(x5) & n_front(x4) & on(e1,x3) & n_bench(x3) & a_red(s1) & Theme(s1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1.(n_people(x1) & Actor(e1,x1) & v_sit(e1))