Many children sit against a brick wall while an adult stands over them.
Children are against a wall.
Children are against to adult in their activities.
exists e1 p1 x1 x2 x3.(exists e2 x4.(over(e2,x1) & Actor(e2,x4) & v_stand(e2) & n_adult(x4)) & n_thing(x1) & while(e1,p1) & against(e1,x2) & n_wall(x2) & of(x2,x3) & n_brick(x3) & Actor(e1,x1) & v_sit(e1) & n_child(x1) & n_quantity(x1))
exists p1 x1.(exists x2.(against(x1,x2) & n_wall(x2)) & n_child(x1))