A lady sits on a porch swing in the yard while a girl sits on the ground by her.
The woman is a mother.
Being near the girl does not imply that she is a mother.
exists e1 p1 x1 x2 x3 x4 x6.(n_female(x4) & n_ground(x6) & n_yard(x4) & exists e2 x5.(by(e2,x4) & on(e2,x6) & Actor(e2,x5) & v_sit(e2) & n_girl(x5)) & while(e1,p1) & in(e1,x4) & on(e1,x2) & n_swing(x2) & of(x2,x3) & n_porch(x3) & Actor(e1,x1) & v_sit(e1) & n_lady(x1))
exists p1 x1.(n_woman(x1) & exists x2.((x1 = x2) & n_mother(x2)))