query: #items with PubMed ID but no English label or title
  SELECT ?pmid ?item #?itemLabel
  WHERE
  {
    ?item wdt:P698 ?pmid.
    MINUS {?item rdfs:label ?itemLabel 	filter(lang(?itemLabel) = "en")}
    FILTER(!BOUND(?itemLabel))
    FILTER NOT EXISTS { ?item wdt:P1476 ?title }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
  }
  #LIMIT 200