query: # University of Wales Press books with combined book/version items.
  
  SELECT ?x ?xLabel WHERE {
    ?x  wdt:P31 wd:Q3331189;  # instanceOf: version
        wdt:P31 wd:Q571;      # instanceOf: book
        wdt:P123 wd:Q7896557. # publisher: University of Wales Press
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . }
  }