add SPARQL query support

[WolfgangFahl]

use an example from pyLodStorage such as:

 {
            "endpoint":"https://query.wikidata.org/sparql",
            "prefixes": ["http://www.wikidata.org/entity/"],
            "lang": "sparql",
            "name": "CityTop10",
            "title": "Ten largest cities of the world",
            "description": "Wikidata SPARQL query showing the 10 most populated cities of the world using the million city class Q1637706 for selection",
            "query": """# Ten Largest cities of the world 
# WF 2021-08-23
# see also http://wiki.bitplan.com/index.php/PyLoDStorage#Examples
# see also https://github.com/WolfgangFahl/pyLoDStorage/issues/46
SELECT DISTINCT ?city ?cityLabel ?population ?country ?countryLabel 
WHERE {
  VALUES ?cityClass { wd:Q1637706}.
  ?city wdt:P31 ?cityClass .
  ?city wdt:P1082 ?population .
  ?city wdt:P17 ?country .
  SERVICE wikibase:label {
    bd:serviceParam wikibase:language "en" .
  }
}
ORDER BY DESC(?population)
LIMIT 10"""
            }

# Ten Largest cities of the world 
# WF 2021-08-23
# see also http://wiki.bitplan.com/index.php/PyLoDStorage#Examples
# see also https://github.com/WolfgangFahl/pyLoDStorage/issues/46
SELECT DISTINCT ?city ?cityLabel ?population ?country ?countryLabel 
WHERE {
  VALUES ?cityClass { wd:Q1637706}.
  ?city wdt:P31 ?cityClass .
  ?city wdt:P1082 ?population .
  ?city wdt:P17 ?country .
  SERVICE wikibase:label {
    bd:serviceParam wikibase:language "en" .
  }
}
ORDER BY DESC(?population)
LIMIT 10

[WolfgangFahl]

Ten largest cities of the world

Wikidata SPARQL query showing the 10 most populated cities of the world using the million city class Q1637706 for selection

query

# Ten Largest cities of the world 
# WF 2021-08-23
# see also http://wiki.bitplan.com/index.php/PyLoDStorage#Examples
# see also https://github.com/WolfgangFahl/pyLoDStorage/issues/46
SELECT DISTINCT ?city ?cityLabel ?population ?country ?countryLabel 
WHERE {
  VALUES ?cityClass { wd:Q1637706}.
  ?city wdt:P31 ?cityClass .
  ?city wdt:P1082 ?population .
  ?city wdt:P17 ?country .
  SERVICE wikibase:label {
    bd:serviceParam wikibase:language "en" .
  }
}
ORDER BY DESC(?population)
LIMIT 10

try it!

result

city	cityLabel	population	country	countryLabel
Value(uri:'http://www.wikidata.org/entity/Q1353')	Value(literal:'Delhi')	Value(literal:'26495000')	Value(uri:'http://www.wikidata.org/entity/Q668')	Value(literal:'India')
Value(uri:'http://www.wikidata.org/entity/Q8686')	Value(literal:'Shanghai')	Value(literal:'24870895')	Value(uri:'http://www.wikidata.org/entity/Q148')	Value(literal:"People's Republic of China")
Value(uri:'http://www.wikidata.org/entity/Q956')	Value(literal:'Beijing')	Value(literal:'21710000')	Value(uri:'http://www.wikidata.org/entity/Q148')	Value(literal:"People's Republic of China")
Value(uri:'http://www.wikidata.org/entity/Q1354')	Value(literal:'Dhaka')	Value(literal:'16800000')	Value(uri:'http://www.wikidata.org/entity/Q902')	Value(literal:'Bangladesh')
Value(uri:'http://www.wikidata.org/entity/Q1156')	Value(literal:'Mumbai')	Value(literal:'15414288')	Value(uri:'http://www.wikidata.org/entity/Q668')	Value(literal:'India')
Value(uri:'http://www.wikidata.org/entity/Q8660')	Value(literal:'Karachi')	Value(literal:'14910352')	Value(uri:'http://www.wikidata.org/entity/Q843')	Value(literal:'Pakistan')
Value(uri:'http://www.wikidata.org/entity/Q8673')	Value(literal:'Lagos')	Value(literal:'14862000')	Value(uri:'http://www.wikidata.org/entity/Q1033')	Value(literal:'Nigeria')
Value(uri:'http://www.wikidata.org/entity/Q406')	Value(literal:'Istanbul')	Value(literal:'14657434')	Value(uri:'http://www.wikidata.org/entity/Q43')	Value(literal:'Turkey')
Value(uri:'http://www.wikidata.org/entity/Q1490')	Value(literal:'Tokyo')	Value(literal:'14049146')	Value(uri:'http://www.wikidata.org/entity/Q17')	Value(literal:'Japan')
Value(uri:'http://www.wikidata.org/entity/Q16572')	Value(literal:'Guangzhou')	Value(literal:'14043500')	Value(uri:'http://www.wikidata.org/entity/Q148')	Value(literal:"People's Republic of China")