A soldier stands behind a temporary barrier.
The soldier is sitting in a tank.
A soldier can not be stands and sitting at the same time.
exists e1 s1 x1 x2.(behind(e1,x2) & n_barrier(x2) & a_temporary(s1) & Theme(s1,x2) & Actor(e1,x1) & v_stand(e1) & n_soldier(x1))
exists e1 x1 x2.(n_soldier(x1) & in(e1,x2) & n_tank(x2) & Actor(e1,x1) & v_sit(e1))