composizione_convogli_genere.sparql

PREFIX bio-ext: <http://dati.cdec.it/lod/bio-ext/>
PREFIX bio: <http://purl.org/vocab/bio/0.1/>
PREFIX shoah: <http://dati.cdec.it/lod/shoah/>

SELECT DISTINCT  ?labelConvoy ?deparDate ?labelCamp ?gender (count(?gender) as ?count)  
FROM <http://dati.cdec.it/lod/shoah/> 
WHERE
{?convoy a shoah:Convoy;
         rdfs:label ?labelConvoy;
         shoah:departureDate ?deparDate;
         shoah:toNaziCamp ?naziCamp.
?naziCamp rdfs:label ?labelCamp.

?person shoah:persecution ?pers.
?pers shoah:convoy ?convoy.

OPTIONAL {?person  foaf:gender ?gender.}

} ORDER BY ?convoy