SELECT COUNT(ST_Contains(a.location, b.location))
   FROM wards a, cycle_stations b;

 ERROR:  Unknown geometry type: 13 - PolyhedralSurface

SELECT
   ST_AStext(
     ST_Extent(
         ST_Force3d(
              ST_Extrude(
                  ST_Expand(
                     ST_MakePoint(0,0),
                  10, 10),
              0, 0, 20)
         )
      )
   );

SELECT
    a.name,
    COUNT(b.location)
 FROM
     wards a, cycle_stations b
WHERE ST_Contains(a.location, b.location);