query: SELECT DISTINCT ?item 
  WHERE
  {
  	?print wdt:P361 wd:Q21542493 .
      {?print wdt:P123 ?item .}
      UNION
      {?print wdt:P170 ?item .}
      UNION
      {?print wdt:P1877 ?item .}
      ?item wdt:P31 wd:Q5 .
      }