<searchClause>
  <index>dc.title</index>
  <relation>
    <value>=</value>
    <modifiers>
      <modifier>
        <type>rel.algorithm</type>
        <comparison>=</comparison>
        <value>CORI</value>
      </modifier>
    </modifiers>
  </relation>
  <term>squid</term>
</searchClause>
