query: # Antipopes
  #defaultView:Timeline
  SELECT ?antipope ?antipopeLabel ?born ?floruit ?died WHERE {
   ?antipope p:P39/ps:P39/wdt:P279* wd:Q172748.
   OPTIONAL { ?antipope wdt:P569 ?born. }
   OPTIONAL { ?antipope wdt:P1317 ?floruit. }
   OPTIONAL { ?antipope wdt:P570 ?died. }
   SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  }
  ORDER BY COALESCE(?born,?floruit,?died)