How to select some items from list of items

Hi all,

i have a question on how to select some items from list of items

for example:
<book>
 <item>AA</item>
 <item>BB</item>
 <item>CC</item>
 <item>DD</item>
 <item>EE</item>
 <item>FF</item>
</book>

i only want to select the first 4 items  and drop the rest.
the output should give me AA BB CC and DD

Any help will be greatly appreciated.

Thanks,
-paul


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