A group of people play tug-of-war with a tractor.
A group is studying for an upcoming exam.
A group playing is not studying.
exists e1 x1 x2 x3 x4.(with(e1,x4) & n_tractor(x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_tug-of-war(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2.(for(e1,x2) & n_exam(x2) & a_upcoming(s1) & Theme(s1,x2) & Actor(e1,x1) & v_study(e1) & n_group(x1))