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Please read my comments more carefully before you complain that: . I did not put any words in your mouth because I never said that you wanted to prove that her naturalisation was in 2004. What I said was:  Can you see the difference? I never said that you are trying to prove she was naturalised in 2004. So please stop the false claims. As far as using the passport for her date of birth that's uncontroversial so it may be done. But putting the date of issue of the passport in the article is useless, as Bbb23 said, and is also original research and used to prove a controversial point in a WP:WEASEL way and without using reliable sources WP:RS to make the point. According to the WP:BLP policy 

Therefore, and for hopefully the last time: Until you come up with an independent third-party source which will make this info notable, this information about the her passport is not going in  just by using your own original synthesis WP:SYNTH and researcg WP:OR.  λόγοςπράξις "