A crowd forms in front of the theater.
There is a single person in front of the theater.
Single is one , as a crowd is multiple.
exists x1 x2 x3 x4.(n_theater(x4) & a_topic(x1) & in(x1,x3) & of(x3,x4) & n_front(x3) & n_form(x1) & of(x1,x2) & n_crowd(x2))
exists p1 x1 x4.(n_theater(x4) & exists s1 x2 x3.((x1 = x2) & in(x2,x3) & of(x3,x4) & n_front(x3) & n_person(x2) & a_single(s1) & Theme(s1,x2)))