Two girls sitting in class.
The students are ready to learn.
if girls are sitting in class then they are students.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_class(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))
exists p1 s1 x1.(n_student(x1) & Topic(s1,p1) & Actor(s1,x1) & a_ready(s1) & exists e1.(Actor(e1,x1) & v_learn(e1)))