Get the non-empty element using XPATH

Question

I have the following XML

<?xml version = "1.0" encoding = "UTF-8"?>
<root>
  <group>
    <p1></p1>
  </group>
  <group>
    <p1>value1</p1>
  </group>
  <group>
    <p1></p1>
  </group>
</root>

is it possible to get the last the node with value? in this case get the value of the second group/p1.

Answer 1

This xpath should work as well:

//group/p1[string-length(text()) > 0]