public class SPARQLUpdateDataBlockParser
An extension of TrigParser that processes data in the format
specified in the SPARQL 1.1 grammar for Quad data (assuming no variables, as
is the case for INSERT DATA and DELETE DATA operations). This format is
almost completely compatible with TriG, except for three differentces:
it introduces the 'GRAPH' keyword in front of each named graph identifier
it does not allow the occurrence of blank nodes.
it does not require curly braces around the default graph.