for $art in collection("sortie-3214-regexp")//article
for $elt in $art/element
let $nextElt := $elt/following-sibling::element[1]
where $elt/data[1] = "ADJ" and $nextElt/data[1] = "NOM"
return concat($elt/data[3]/text()," ",$nextElt/data[2]/text(),"
")