NSXMLParser is stream-based, and sends various messages to its delegate when it encounters particular components in the XML stream - an opening tag, text, an end tag, and so forth. So, create an instance of NSXMLParser, and assign to it a delegate that you write that conforms to the NSXMLParserDelegate protocol. ( Edit: From the code you added to your question, it looks like you may have already done this part, or at least made a good start on it.
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I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.