a large crowd of people.
A quiet hospital during overnight hours.
It is either quiet or there is a large crowd.
exists s1 x1 x2.(a_topic(x1) & of(x1,x2) & n_people(x2) & n_crowd(x1) & a_large(s1) & Theme(s1,x1))
exists s1 s2 x1 x2.(a_topic(x1) & during(x1,x2) & n_hour(x2) & a_overnight(s2) & Theme(s2,x2) & n_hospital(x1) & a_quiet(s1) & Theme(s1,x1))