PREFIX geo: <http://www.opengis.net/ont/geosparql#>
PREFIX geof: <http://www.opengis.net/def/function/geosparql/>
SELECT ?s ?p ?o ?geom
FROM <http://www.sdi4apps.eu/poi.rdf>
WHERE {
 ?s <http://www.opengis.net/ont/geosparql#asWKT> ?geom.
 ?s geo:sfWithin <http://www.geonames.org/3175395>.
 FILTER(isBlank(?geom) = false).
 #FILTER(bif:st_may_intersect( "POLYGON((9.207240137246536 45.40800058333346, 9.207240137246536 45.46461446480265, 9.32474234977095 45.46461446480265, 9.32474234977095 45.40800058333346, 9.207240137246536 45.40800058333346))"^^geo:wktLiteral, ?geom )).
 ?s ?p ?o.
} ORDER BY ?s