D(node-metadata-equality-string,name:http://www.sleepycat.com/2002/dbxml,=,'bib.xml',P(edge-element-equality-string,prefix,author.last)) P(edge-element-equality-string,prefix,author.last) V(edge-element-equality-string,author.last,=,'[to be calculated]') P(edge-element-equality-string,prefix,author.first) D(node-metadata-equality-string,name:http://www.sleepycat.com/2002/dbxml,=,'bib.xml',n(V(edge-element-equality-string,author.last,=,'[to be calculated]'),V(edge-element-equality-string,author.first,=,'[to be calculated]'),P(edge-element-equality-string,prefix,book.title))) V(edge-element-equality-string,author.last,=,'[to be calculated]') V(edge-element-equality-string,author.first,=,'[to be calculated]') P(edge-element-equality-string,prefix,book.title)