Young college students working hard in class.
The students are relaxing during free time.
Young college students working hard contradicts with students relaxing.
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 s1 x1 x2.(n_student(x1) & during(e1,x2) & n_time(x2) & a_free(s1) & Theme(s1,x2) & Actor(e1,x1) & v_relax(e1))