<?xml version="1.0" encoding="utf-8" ?>
<!ELEMENT motorcycles (bike,date?)+ >
<!ELEMENT bike        (name,engine,kind,drive, accessories?,comment?) >
<!ELEMENT name        (manufacturer,brandName,additionalName?) >
<!ELEMENT manufacturer       (#PCDATA)>
<!ELEMENT brandName         (#PCDATA)>
<!ELEMENT additionalName    (#PCDATA)>
<!ELEMENT engine             (#PCDATA)>
<!ELEMENT kind               (#PCDATA)>
<!ELEMENT drive              (#PCDATA)>
<!ELEMENT comment            (#PCDATA)>
<!ELEMENT accessories        (#PCDATA)>

<!-- Date of the format yyyy.mm.dd -->
<!ELEMENT date              (#PCDATA)>
<!ATTLIST  bike year NMTOKEN #REQUIRED
                color NMTOKENS #REQUIRED
                condition (useless | bad | serviceable | moderate | good |
                           excellent | new | outstanding) "excellent" >