SQL Server 2008 XML Query method - retrieve text() value where another text() value exists?

Please consider the following:

DECLARE @xml  XML
SET @xml =
'<Capture>
<Data><DataType>Card Number</DataType><Value>1234567898765</Value></Data>
<Data><DataType>Expiry Date</DataType><Value>1010</Value></Data>
</Capture>'

SELECT @xml.query('//*[text()="Expiry Date"]/text()')

Returns:

Expiry Date

Rather than retrieving the <DataType/> text node how can I retrieve the <Value/> text node where the text node value of <DataType/> is "Expiry Date"?