<!ATTLIST biography xmlns:xlink CDATA #FIXED                                        "http://www.w3.org/1999/xlink"><!ELEMENT person (first_name, last_name)><!-- Birth and death dates are given in the form yyyy/mm/dd --><!ATTLIST person born CDATA #IMPLIED                 died CDATA #IMPLIED><!ELEMENT date   (month, day, year)><!ELEMENT month  (#PCDATA)><!ELEMENT day    (#PCDATA)><!ELEMENT year   (#PCDATA)><!-- xlink:href must contain a URI.     xlink:type must have the value simple if it's present at all. --><!ATTLIST emphasize xlink:type NMTOKEN #IMPLIED                    xlink:href CDATA   #IMPLIED><!ELEMENT profession (#PCDATA)><!ELEMENT footnote   (#PCDATA)><!-- The source is given according to the Chicago Manual of Style     citation conventions --><!ATTLIST footnote source CDATA #REQUIRED><!ELEMENT first_name (#PCDATA)><!ELEMENT last_name  (#PCDATA)><!ELEMENT image EMPTY><!ATTLIST image source CDATA   #REQUIRED                width  NMTOKEN #REQUIRED                height NMTOKEN #REQUIRED                ALT    CDATA   #IMPLIED><!ENTITY % top_level "( #PCDATA | image | paragraph | definition | graph                       | person | profession | emphasize | last_name                       | first_name | footnote | date )*"><!ELEMENT paragraph  %top_level; ><!ELEMENT definition %top_level; ><!ELEMENT emphasize  %top_level; ><!ELEMENT biography  %top_level; >