A woman is sitting at a table in a classroom, with a girl.
a woman is sitting with  girl
"Is sitting with girl" is a rephrasing of "is sitting at a table in a classroom with a girl".
exists e1 x1 x2 x3 x4.(with(e1,x4) & n_girl(x4) & in(e1,x3) & n_classroom(x3) & at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_woman(x1))
exists e1 x1 x2.(with(e1,x2) & n_girl(x2) & Actor(e1,x1) & v_sit(e1) & n_woman(x1))