<label xml:lang="en">Version</label>
        <comment xml:lang="en">
                <p>
-                       A version of something.
+                       A versioned <ref target="foaf:Document">Document</ref>.
                </p>
                <p>
                        Following <ptr target="(RFC4287)"/>, Versions must have exactly one <ptr target="awol:id"/>, used to associate related Versions with one another, and one <ptr target="awol:updated"/>, used to determine the most recent Version.
        <isDefinedBy>
                <SpecificResource source="(AWOL)" fragment="Version"/>
        </isDefinedBy>
+       <subClassOf>
+               <resource name="foaf:Document"/>
+       </subClassOf>
        <subClassOf>
                <Restriction>
                        <onProperty>