A woman with a stroller talking through a fence too four students with green uniform shirts.
She knows the students.
A woman talking to the students doesn't mean that she knows them.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & with(x1,x2) & through(e1,x7) & n_fence(x7) & Theme(e1,x4) & Actor(e1,x3) & v_talk(e1) & with(x4,x5) & n_shirt(x5) & of(x5,x6) & n_uniform(x6) & a_green(s1) & Theme(s1,x5) & n_student(x4) & card_eq_4(x4) & r_too(x4) & (x2 = x3) & n_stroller(x2) & n_woman(x1))
exists e1 x1 x2.(n_student(x2) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_know(e1))