A class full of students.
There is a class full of students.
"There is a class full of students" is another way to say "A class full of 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 p1 x1 s1 x2 x3 x4.((x1 = x2) & of(s1,x4) & n_student(x4) & Theme(s1,x3) & a_full(s1) & (x2 = x3) & n_class(x2))