{ for $element in collection('3208-2017-v2.xml')//element let $next_element := $element/following-sibling::element[1] where $element/data[@type='type']='NOM' and $next_element/data[@type='type']='ADJ' return {$element/data[@type='string']/text(), ' ', $next_element/data[@type='string']/text()} }