SPARQL Construct and XSLT

Example 1: Geo metadata query

東京都内の風景を写した写真を位置情報から検索します。次のフォームのクエリは、 銀座 飯田橋 秋葉原 新宿 渋谷 赤坂 池袋 周辺（緯度経度が+/-0.015度の範囲）で撮影したものを調べます。

Search pictures of Tokyo landscape by location metadata. This query will find those taken in the range of +/- 0.015 degree from Ginza Iidabashi Akihabara Shinjuku Akasaka Shibuya Ikebukuro

SPARQL query

PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> PREFIX rss: <http://purl.org/rss/1.0/> PREFIX dc: <http://purl.org/dc/elements/1.1/> PREFIX foaf: <http://xmlns.com/foaf/0.1/> CONSTRUCT { ?item a rss:item . ?item rss:link ?link . ?item rss:title ?title . ?item rss:description ?desc . ?item dc:date ?date . ?item foaf:thumbnail ?thumb . ?item foaf:topic ?loc . ?loc geo:lat ?lat . ?loc geo:long ?long } WHERE { ?item rss:title ?title . ?item rss:description ?desc . ?item rss:link ?link . ?item dc:date ?date . ?item foaf:thumbnail ?thumb . ?item foaf:topic ?loc . ?loc geo:lat ?lat . ?loc geo:long ?long . FILTER ((?lat > 35.628) && (?lat < 35.688) && (?long > 139.760) && (?long < 139.780)) }
XSL Stylesheet:

RDF image annotation source:

Example 2: Concert calendar query

東京の演奏会カレンダーから、descriptionに beethoven mozart brahms mahler schubert を含むものを検索してみます。

Search from Tokyo concert calendar for events whose description include: beethoven mozart brahms mahler schubert

SPARQL query

PREFIX cal: <http://www.w3.org/2002/12/cal/ical#> PREFIX dc: <http://purl.org/dc/elements/1.1/> PREFIX foaf: <http://xmlns.com/foaf/0.1/> CONSTRUCT { ?ev a cal:Vevent . ?ev cal:dtstart ?st . ?st cal:dateTime ?dt . ?ev cal:summary ?summary . ?ev cal:description ?description } WHERE { ?ev cal:dtstart ?st . ?st cal:dateTime ?dt . ?ev cal:summary ?summary . ?ev cal:description ?description . FILTER regex (?description, "beethoven", "i") }
XSL Stylesheet:

RDF image annotation source:

Nearby: Image area and SPARQL