机译：Since the advent of Linked Data,more and more structured data have been published on the Web in Linked Data format,including a large amount of bibliographic data,academic information andcontrolled vocabularies from libraries and other related institutions.Therefore,the issue of how to effectively access these interlinked RDF data becomes of crucial importance.SPARQL provides a standard way to query RDF data;however,it is very difficult for ordinary users to construct
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