Transformation stpe: Split Messages

Hi ,

In the transformation step i need to split a message n number of times.

Example:

i have 1 source message . i need to split it n number of times.

SOURCE STRUCTEURE WILL BE:

<MT>

<ARTICLE>

<SITE>

</MT>

<MT>

<ARTICLE>

<SITE>

</MT>

I NEED TO SPLIT IT IN TRANSFORMATION STEPL. PLEASE SUGGEST ME HOW TO DO?