Is binding from two datasources possible?

Question

Hello,

I would like to know, if it is possible to do something like this in XAML.

<Binding Source="{StaticResource baseData}" 
         XPath="/baseData/nodes[@value={StaticResource actualData},XPath=/actual/node}]/text" />

The code-example ist not possible.

But how could I select a node from baseData with the value of the node /actual/node from actual-Data The two Resources are XmlDataProviders from separate XmlDocuments. The background is that the content of a Label should contain a textual representation and not the data-value of the node /actual/node.

Is something possible? If yes how? If no what are alternatives?

Greetings, Martin