XML/RDF and XML/Topic Map

"Msc.Ram" <[email protected]>
Newsgroups gmane.comp.mozilla.accessibility
Organization http://groups.google.com
Message-ID <[email protected]>
Hello to everybody.
            I am a Student doing my research project in RDF  and Topic
Maps, i am entirely new to XML/RDF and Topic Maps. My task is to
create two search engines one with XML/RDF and other with XML/Topic
Maps and i have to compare which is the best technology of the two
is.
            Initially i am given the task of getting some hundreds of
data and then write tagset for those hundred datas. Since i am new i
am not sure about how i need to start writing tagset for hundred
documents.
         Say for example i am getting data regarding football then how
can i start writing the tagset for those document really very much
confused. Can any one help please.
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