A group of college students walk in nice weather.
College students are studying for finals.
You can't both walk and be studying.
exists e1 s1 x1 x2 x3 x4.(in(e1,x4) & n_weather(x4) & a_nice(s1) & Theme(s1,x4) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_student(x2) & of(x2,x3) & n_college(x3) & n_group(x1))
exists e1 x1 x2 x3.(for(e1,x3) & n_final(x3) & Actor(e1,x1) & v_study(e1) & n_student(x1) & (x1 = x2) & ne_nam_college(x2))