Hi @Thoralf
Welcome to the KNIME Community!
This can be achieved with the correct sequence of XPath query’s. This could also require some Ungroup nodes afterwards. Based on your screenshot it seems that you have multiple instances of <RightsStatement>
If you are able to share that xml showing your use case in a workable format then users are generally more inclined to help you out with a proper solution 
This could be starting point:
Input
Creates Nodes based on RightsController/RightsStatement
Then query the StartDate and Territory accordingly in a second Xpath node.
