1:<?xml version="1.0" encoding="UTF-8"?>
   2:<classList>
   3:    <class name="Chemistry 101">
   4:        <studentList>
   5:            <id>123-45-6789</id>
   6:            <id>234-56-7890</id>
   7:            <id>345-67-8901</id>
   8:            <id>456-78-9012</id>
   9:            <id>567-89-0123</id>
  10:        </studentList>
  11:    </class>
  12:    <class name="Biology 101">
  13:        <studentList>
  14:            <id>123-45-6789</id>
  15:            <id>234-56-7890</id>
  16:            <id>345-67-8901</id>
  17:            <id>456-78-9012</id>
  18:            <id>567-89-0123</id>
  19:        </studentList>
  20:    </class>
  21:</classList>