Students are sitting in a classroom listening to six people who are teaching.
students listening in class
Students listening in class are usually sitting in a classroom when people are teaching.
exists e2 e1 x1 x2 x3 x4 x5.(to(e1,x4) & Actor(e2,x5) & v_teach(e2) & (x4 = x5) & n_people(x4) & card_eq_6(x4) & in(e1,x2) & n_listening(x2) & of(x2,x3) & n_classroom(x3) & Actor(e1,x1) & v_sit(e1) & n_student(x1))
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_class(x3) & Actor(e1,x2) & v_listen(e1) & (x1 = x2) & n_student(x1))