CSS - Noun Entry

<!ELEMENT nounEntry (variants+, compl*, nominalization*, tradeName?, trademark?, proper?)>
                                                                                
<!ELEMENT variants (#PCDATA)>
<!ELEMENT compl (#PCDATA)>
<!ELEMENT nominalization (#PCDATA)>
<!ELEMENT tradeName (#PCDATA)>
<!ELEMENT trademark EMPTY>
<!ELEMENT proper EMPTY>