SELECT * WHERE {
  SERVICE wikibase:mwapi {
      bd:serviceParam wikibase:api "Search" .
      bd:serviceParam wikibase:endpoint "www.wikidata.org" .
      bd:serviceParam mwapi:srsearch "Giovanni" .
      ?item wikibase:apiOutputItem "@title" .
      bd:serviceParam wikibase:LIMIT 20
  }
  ?item wdt:P31 wd:Q12308941.
}