One woman watches over a man and a woman who are seated and painting.
A woman watches over her students who are practicing painting.
One cannot infer that the man and woman are the students.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7.(over(e1,x2) & subset_of(x4,x2) & subset_of(x7,x4) & n_painting(x7) & subset_of(x5,x4) & Theme(e2,x6) & v_seat(e2) & (x5 = x6) & n_woman(x5) & subset_of(x3,x2) & n_man(x3) & Actor(e1,x1) & v_watch(e1) & n_woman(x1) & card_eq_1(x1))
exists e2 e1 x1 x2 x3 x4.(over(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_practice(e2) & n_painting(x4) & (x2 = x3) & n_student(x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_watch(e1) & n_woman(x1))