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"""
A simple example showing how to process RDFa from the web
"""

from rdflib import Graph

if __name__ == "__main__":
    g = Graph()

    g.parse(
        "https://www.worldcat.org/title/library-of-babel/oclc/44089369", format="rdfa"
    )

    print("Books found:")

    for row in g.query(
        """SELECT ?title ?author WHERE {
       [ a schema:Book ;
         schema:author [ rdfs:label ?author ] ;
         schema:name ?title ]
       FILTER (LANG(?title) = 'en') } """
    ):

        print("%s by %s" % (row.title, row.author))