<category>
    <pattern>^ POPULATION OF * ^</pattern>
    <template>
        <think><set name="city"><star index ="2"/></set></think>
            <condition name="city">
                <li value="Bristol">
                    The population of Bristol is about 430000
                </li>
                <li value="London">
                    The population of London is about 8.6 million
                </li>
                <li value="Bath">
                    The population of Bath is about 84000
                </li>
            </condition>
    </template>
  </category>