sample.xml

<output id="output_2449884">
  <prompt selectionType="RANDOM">
    <item>Is there anything else I can help you with?</item>
  </prompt>
  <getUserInput>
    <input>
      <grammar>
        <item>Yes</item>
      </grammar>
    </input>
    ...
  <concept>
    <grammar>
      <item>yes</item>
      <item>yep</item>
      <item>yup</item>
      <item>yeah</item>
      <item>yeh</item>
      <item>y</item>
      <item>that's right</item>
      <item>sure</item>
      <item>yes thanks</item>
    </grammar>
  </concept>