query: SELECT ?item ?d (COUNT(*) as ?ct) 
  WITH
  {
  	SELECT ?item ?d ?ws {
      ?item wdt:P571 ?d ; wdt:P856 ?ws .
  	FILTER ( ?d > "2021-03-30T00:00:00Z"^^xsd:dateTime)
  	FILTER ( ?d > (now()-"P3M"^^xsd:duration) && ?d < now() )
      }          
  } as %new
  WHERE
  {
    INCLUDE %new .
    hint:Prior hint:rangeSafe true .  
    hint:Query hint:optimizer "None".  
    ?p schema:isPartOf ?ws .
  }
  GROUP BY ?item ?d
  ORDER BY DESC(?d) ?item