query: SELECT ?item ?prev ?next WHERE {
    ?item wdt:P31 wd:Q3464665 . OPTIONAL { ?item p:P179 [ pq:P155 ?prev ] }  OPTIONAL { ?item p:P179 [ pq:P156 ?next ] } 
  } ORDER BY DESC(xsd:integer(SUBSTR(STR(?item),STRLEN("http://www.wikidata.org/entity/Q")+1))) 
  LIMIT 300