Grouping with Nested Queries

WHERE <book>

<title> $t </>,

<publisher><name>Addison-Wesley</></>

</> CONTENT_AS $p IN “www.a.b.c/bib.xml”

CONSTRUCT <result>

<titre> $t </>

WHERE <author> $a </> IN $p

CONSTRUCT <auteur> $a</>

</>

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