semantic web framework

 Attean is a Perl framework for working with RDF data and SPARQL
 queries. It features parsers and serializers for many different RDF
 formats including RDF/XML, Turtle, N-Triples and N-Quads, as well as
 SPARQL formats like SPARQL-XML, SPARQL-JSON, SPARQL-CSV and SPARQL-TSV.
 .
 Attean features support for SPARQL 1.1 queries, and a set of APIs and
 command line tools to parse, transform, query, and serialize RDF data.
 .
 SPARQL is an RDF query language, that is, a semantic query language for
 databases, able to retrieve and manipulate data stored in Resource
 Description Framework format.
 .
 Resource Description Framework (RDF) is a standard model for data
 interchange on the Web.
 .
 Some modules require additional packages:
  * Test::Attean::* require the packages libmoose-perl libtest-roo-perl.
  * Test::Attean::SPARQLSuite instead requires the packages
    libtest-roo-perl libtest-modern-perl.