tianwen.sparql

#defaultView:Map
PREFIX dct: <http://purl.org/dc/terms/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX dbc: <http://dbpedia.org/resource/Category:>
PREFIX dbp: <http://dbpedia.org/property/>
PREFIX dbo: <http://dbpedia.org/ontology/>

# This makes a query for astronomers and cartographers in China, including the Jesuit missionaries.
# Queries for their notable works and place of birth. A query on the wikidata endpoint results in a map
# of their birthplaces with links to the notable works.

SELECT DISTINCT ?place ?placeLabel ?work ?workLabel ?wditem ?wditemLabel ?deathDate $image ?location WHERE {
   SERVICE <http://dbpedia.org/sparql> {
      {?item dct:subject dbc:Chinese_astronomers } UNION
      {?item dct:subject dbc:Chinese_cartographers } UNION
      {?item dct:subject dbc:Jesuit_China_missions} .
      ?item rdfs:label ?itemLabel FILTER (LANG(?itemLabel)="en") .
      ?item owl:sameAs ?wditem FILTER regex (?wditem, "wikidata.org") .
    }            
    SERVICE <https://query.wikidata.org/sparql> { #Select from Wikidata
      # ?wditem wdt:P569 ?birthDate . # date of birth
      ?wditem wdt:P570 ?deathDate . # date of death
      ?wditem wdt:P19 ?place .      # place of birth
      ?place rdfs:label ?placeLabel FILTER (LANG(?placeLabel)="en") .
      ?place wdt:P625|wdt:P1366+/wdt:P625 ?location .
      OPTIONAL { ?wditem wdt:P18 ?image . } # Select an image (P18), if available
      OPTIONAL { ?work wdt:P50 ?wditem . ?work rdfs:label ?workLabel FILTER (LANG(?workLabel)="en") .}
      ?wditem rdfs:label ?wditemLabel FILTER (LANG(?wditemLabel)="en") . #Labels should be taken in English
    }
} ORDER BY ?deathDate