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http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Section 2: Title of paper, abstract of 400-500 words, keywords (Papers written in languages other than Chinese or English should submit Chinese or English version at the same time.)
http://www.w3.org/ns/prov#wasQuotedFrom	upenn.edu