select-author-by-isbn.rq

# Select an author based on the ISBN of one of their books.
PREFIX bio: <http://purl.org/vocab/bio/0.1/> 
PREFIX bibo: <http://purl.org/ontology/bibo/> 
PREFIX blterms: <http://www.bl.uk/schemas/bibliographic/blterms#> 
PREFIX dct: <http://purl.org/dc/terms/> 
PREFIX event: <http://purl.org/NET/c4dm/event.owl#> 
PREFIX foaf: <http://xmlns.com/foaf/0.1/> 
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> 
PREFIX isbd: <http://iflastandards.info/ns/isbd/elements/> 
PREFIX org: <http://www.w3.org/ns/org#> 
PREFIX owl: <http://www.w3.org/2002/07/owl#> 
PREFIX rda: <http://RDVocab.info/ElementsGr2/> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX skos: <http://www.w3.org/2004/02/skos/core#> 
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 

SELECT ?author WHERE {
  #Match the book
  ?uri bibo:isbn10 "0261102214";
       #Match its author
	   dct:creator ?author.
}