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body> <div xml:id="WN1" n="I" type="book"> <div xml:id="WN101" n="I.1" type="chapter"/> <div xml:id="WN102" n="I.2" type="chapter"/> <div xml:id="WN110" n="I.10" type="chapter"> <div xml:id="WN1101" n="I.10.1" type="part"/> <div xml:id="WN1102" n="I.10.2" type="part"/> </div> </div> <div xml:id="WN2" n="II" type="book"/> </body>