Tenho um documento XML da seguinte forma:

<?xml version="1.0" encoding="UTF-8"?>

<decision>
  <question id="0">
    <questionText>What type is your OS?</questionText>
    <answer id="0">
      <answerText>windows</answerText>
    </answer>
    <answer id="1">
      <answerText>linux</answerText>
    </answer>
    <answer id="2">
      <answerText>mac</answerText>
    </answer>
  </question>
  <question id="1">
    <questionText>What are you looking for?</questionText>
    <answer id="0">
      <answerText>table</answerText>
      <question id="0">
        <questionText>Which color table you want?</questionText>
        <answer id="0">
          <answerText>green</answerText>
        </answer>
        <answer id="1">
          <answerText>black</answerText>
        </answer>
        <answer id="2">
          <answerText>pink</answerText>
        </answer>
      </question>
    </answer>
    <answer id="1">
      <answerText>chair</answerText>
    </answer>
    <answer id="2">
      <answerText>bed</answerText>
    </answer>
    <answer id="3">
      <answerText>cloth</answerText>
    </answer>
  </question>

gora, eu quero analisar o XML acima usando jdom em Java. O tipo de coisa recursiva e importante a ser observada é umQuestã não pode ser filho direto deQuestã e o mesmo se aplica aRespond.