extract common element from XML Schema element(xsd)

[Kroll42]

i have this schema:\[code\]<xs:element name="element1"> <xs:complexType> <xs:simpleContent> <xs:extension base="xs:string"> <xs:attribute type="xs:string" name="found" use="required"/> </xs:extension> </xs:simpleContent> </xs:complexType></xs:element><xs:element name="element2"> <xs:complexType> <xs:simpleContent> <xs:extension base="xs:string"> <xs:attribute type="xs:string" name="found" use="required"/> </xs:extension> </xs:simpleContent> </xs:complexType></xs:element>\[/code\]how can I extract common part from element1 and element2. Should I use group?