How can we convert PGN format to Resource Description Framework (RDF)? Is there any parser available in which we take PGN data as input and then convert it to RDF format? Has someone worked on this thing?
I do maintain that converter at UPM. 
You may also want to read the (highly technical) related papers:


An Ontology Design Pattern for Chess Games
Pattern-Based Linked Data Publication: The Linked Chess Dataset Case