A class full of students.
The class has no students in it right now.
The class is either full of students or no students.
exists s1 x1 x2 x3.(a_topic(x1) & of(s1,x3) & n_student(x3) & Theme(s1,x2) & a_full(s1) & (x1 = x2) & n_class(x1))
exists x1.(n_thing(x1) & n_class(x1) & -exists e1 s1 x2.(r_right(e1) & a_now(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & in(x2,x1) & n_student(x2)))