for $a in doc("sortie-treetagger-3232.xml")//item
for $b in $a//element
let $sibling := $b/following-sibling::element[1]
let $secsibling := $b/following-sibling::element[2]
where $b/a[4][contains(., "NOUN")] and $sibling/a[4][contains(., "ADP")] and $secsibling/a[4] = "NOUN"
return <NOUN-VERB-NOUN>{$b/a[2]/text(), ' ', $sibling/a[2]/text(), ' ', $secsibling/a[2]/text()}</NOUN-VERB-NOUN>