Здесь у нас есть xml вход
<?xml version="1.0" encoding="UTF-8"?>
<body>
<p sec-level="secondaryEntry"><label>Table of contents for operating manual, </label><lc>1.21</lc></p>
<p sec-level="primaryEntry"><label>Paragraph in engagement letter confirming that entity to be formed will be the client, </label><lc>1.29</lc></p>
<p sec-level="secondaryEntry"><label>Paragraph in engagement letter confirming that entity to be formed will be separate client, </label><lc>1.31</lc></p>
<p sec-level="secondaryEntry"><label>Consent to representation and conflict waiver letter for foundation formed for existing client, </label><lc>1.32</lc></p>
<p sec-level="secondaryEntry"><label>Consent to use of name, </label><lc>5.8</lc></p>
<p sec-level="primaryEntry"><label>Appointment of initial directors and adoption of bylaws, </label><lc>5.11</lc></p>
<p sec-level="primaryEntry"><label>Waiver of notice and consent to holding first meeting of board of directors, </label><lc>5.12</lc></p>
<p sec-level="secondaryEntry"><label>Heading and participants, </label><lc>5.13</lc></p>
<p sec-level="secondaryEntry"><label>Adoption of waiver of notice and consent to meeting, </label><lc>5.14</lc></p>
</body>
Ожидаемый результат Мы хотим отсортировать по значению атрибута p / @ se c -level .