A lady sits on a porch swing in the yard while a girl sits on the ground by her.
The lady is outside.
if the lady is on a porch swing in the yard then she must be outside.
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 s1 x1.(n_lady(x1) & Theme(s1,x1) & a_outside(s1))