Young college students working hard in class.
The students are studying for a test.
Not all students working hard in class are necessarily studying for a test
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_class(x4) & a_hard(s2) & Manner(e1,s2) & Actor(e1,x3) & v_work(e1) & (x1 = x3) & n_student(x1) & of(x1,x2) & n_college(x2) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_student(x1) & for(e1,x2) & n_test(x2) & Actor(e1,x1) & v_study(e1))