<rng:choice>
<rng:data type="date"/>
<rng:data type="gYear"/>
<rng:data type="gMonth"/>
<rng:data type="gDay"/>
<rng:data type="gYearMonth"/>
<rng:data type="gMonthDay"/>
<rng:data type="time"/>
<rng:data type="dateTime"/>
<rng:data type="token">
<rng:param name="pattern">[0-9.,DHMPRSTWYZ/:+\-]+</rng:param>
</rng:data>
</rng:choice>