mpk.xml

<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:geo="http://www. w3.org/2003/01/geo/wgs84_pos#"
    xmlns:edu="http://www.example.org/">

    <rdf:Description rdf:about="http://www.cs.princeton.edu">
      <dc:title>Map package (.mpk)</dc:title>
      <dc:description>
        Map packages (.mpk) make it easy to share complete map documents with others. 
        A map package contains a map document (.mxd) and the data referenced by the 
        layers it contains, packaged into one convenient, portable file. Map packages
        can be used for easy sharing of maps between colleagues in a work group, across
        departments in an organization, or with any other ArcGIS users via ArcGIS Online. 
        Map packages have other uses, too, such as the ability to create an archive of a
        particular map that contains a snapshot of the current state of the data used in the map.
      </dc:description>
    </rdf:Description>

</rdf:RDF>