]> Parser Super class for resources that can parse data; for example, given the relations: MyDataFormat rdfs:subClassOf data:DataFormat myData rdf:type MyDataFormat myData data:hasParser myParser Sending the URI of myData to myParser should parse the data. For example, given the format FASTA (http://en.wikipedia.org/wiki/FASTA_format), a parser may create objects with rdfs:comment set to the FASTA comment line (lines starting with '>') and tag the sequence as a Sequence Ontology type. Another parser may attempt to extract the species name and gene information from the '>' header, so it may parse these items into semantically tagged taxon and gene properties. Thus a single data URI may be associated with different parsers for different purposes. There is no requirement that parsers return semantically tagged RDF/XML. Indeed, in many cases it is useful if a parser does not return RDF/XML, but returns data itself (e.g., as text value, image file, etc.). For HTTP responses, MIME types may be useful. Parsers are free to define their mode of invocation and behavior.