A young boy with a green bag stands behind a pole in a subway station.
A young girl sits at the park
A boy and a girl are different genders.  If a child sits, then it is impossible that he also stands.  A subway station and a park are different environments.
exists e1 s1 s2 x1 x2 x3 x4 x5.(behind(e1,x3) & in(x3,x4) & n_station(x4) & of(x4,x5) & n_subway(x5) & n_pole(x3) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_bag(x2) & a_green(s2) & Theme(s2,x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_park(x2) & at(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_girl(x1) & a_young(s1) & Theme(s1,x1))