A group of students working together in a classroom.
Students are working.
Students can be working together.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & in(e1,x4) & n_classroom(x4) & a_together(s1) & Manner(e1,s1) & Actor(e1,x3) & v_work(e1) & (x2 = x3) & n_student(x2) & n_group(x1))
exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_student(x1))