[xsl] Extracting part of a string

Subject: [xsl] Extracting part of a string
From: "Fatbob" <fatbob73@xxxxxxxxxxx>
Date: Wed, 15 Apr 2009 08:44:09 -0400
Hi everyone!

Given the following XML node

<Field value="1956-01-12 (53 y)" name="age" />

or

<Field value="2008-07-14 (1 y)" name="age" />

Is there an XSL function that will extract only with is in between the
brackets?

The user just wants to see 53 y, not the birth date.

I'm using XSLT 1.0.

Thanks!

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