{ for $art in doc("3208")//article for $elt in $art/element let $nextElt := $elt/following-sibling::element[1] let $beforeElt := $elt/preceding-sibling::element[1] where $elt/data[1] = "PRP" and $nextElt/data[1] = "NOM" and $beforeElt/data[1] = "NOM" return {$beforeElt,$elt,$nextElt} }