One student argues with another over an assignment.
Two students argue with another over an assignment.
ONE STUDENT IS NOT TWO STUDENTS
exists e1 x1 x2 x3 x4.(with(e1,x3) & over(x3,x4) & n_assignment(x4) & n_thing(x3) & Theme(e1,x2) & Actor(e1,x1) & v_argue(e1) & n_thing(x2) & n_student(x1) & card_eq_1(x1))
exists e1 x1 x2 x3.(with(e1,x2) & over(x2,x3) & n_assignment(x3) & n_thing(x2) & Actor(e1,x1) & v_argue(e1) & n_student(x1) & card_eq_2(x1))