<?xml version="1.0"?>
<sch:schema xmlns:sch="http://purl.oclc.org/dsdl/schematron"
            queryBinding="xslt2">

   <sch:pattern id="Daily-Activities">

      <sch:rule abstract="true" id="start-finish">

         <sch:assert test="finish &gt; start">
             You must finish after you start
         </sch:assert>

      </sch:rule>

      <sch:rule context="eat-breakfast">

         <sch:extends rule="start-finish" />

      </sch:rule>

      <sch:rule context="read">

         <sch:extends rule="start-finish" />

      </sch:rule>

      <sch:rule context="eat-lunch">

         <sch:extends rule="start-finish" />

      </sch:rule>

      <sch:rule context="work">

         <sch:extends rule="start-finish" />

      </sch:rule>

      <sch:rule context="eat-dinner">

         <sch:extends rule="start-finish" />

      </sch:rule>

   </sch:pattern>

</sch:schema>