code: def output(self, response, accepts):
  		
  		graph = self.get_graph(response)
  		if graph is not None:
  			# decide the format
  			mimetype, format = self.format_selector.decide(accepts, graph.context_aware)
  
  			# requested content couldn't find anything
  			if mimetype is None:
  				return self.make_406_response()
  
  			# explicitly mark text mimetypes as utf-8
  			if 'text' in mimetype:
  				mimetype = mimetype + '; charset=utf-8'
  
  			# format the new response
  			serialized = graph.serialize(format=format)
  			response = self.make_new_response(response, mimetype, serialized)
  			return response
  		else:
  			return response
docs: Formats a response from a view to handle any RDF graphs
  		    If a view function returns an RDF graph, serialize it based on Accept header
  		    If it's not an RDF graph, return it without any special handling