for $el at $i in doc("/Users/julie/Documents/projet_encadre/BAO3/fixed/corpus-titre-description-fixed3224.xml")//item/descendant::element
let $a := $el/data[@type='type']
let $n := $el/following-sibling::element[1]/data[@type='type']
let $n := $el/following-sibling::element[2]/data[@type='type']
where (($a/text()='ADJ') and ($n/text()='NOM'))
let $na := string-join(($el/data[@type='string'],$el/following-sibling::element[1]/data[@type='string']), " ")
return $na