[Help-tar] extracting files from a tar archives having many copies of the same file

[Payal]

Dear all,
I have a tar archive in which i added file foo.txt 4 times (using -u
switch). Now when I extract, I find that the last one overwrites all the 
previous ones extracted. How do I  extract say only 2nd copy of foo.txt?

Thanks a lot in advance.
With warm regards,
-Payal
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