A set of SPARQL examples that are used in different TGX resources
Contributor: Egon Willighagen
List of the 100 most cited retracted articles.
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?work ?workLabel (COUNT(DISTINCT ?citation) AS ?count) WHERE {
{ ?work wdt:P31 wd:Q45182324 . } UNION
{ ?work wdt:P793 wd:Q7316896 . } UNION
{ ?work wdt:P5824 [] . }
?work wdt:P1433 / wdt:P123 ?publisher .
?work rdfs:label ?workLabel . FILTER (LANG(?workLabel) = "en") .
?citation wdt:P2860 ?work .
} GROUP BY ?work ?workLabel
ORDER BY DESC(?count) LIMIT 100
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v5("?citation"):::projected
v6("?count")
v4("?publisher")
v3("?work"):::projected
v2("?workLabel"):::projected
a1((" "))
a2((" "))
c5(["wd:Q7316896"]):::iri
c3(["wd:Q45182324"]):::iri
f0[["?workLabel = 'en'"]]
f0 --> v2
subgraph union0[" Union "]
subgraph union0l[" "]
style union0l fill:#abf,stroke-dasharray: 3 3;
subgraph union1[" Union "]
subgraph union1l[" "]
style union1l fill:#abf,stroke-dasharray: 3 3;
v3 --"wdt:P5824"--> a1
end
subgraph union1r[" "]
style union1r fill:#abf,stroke-dasharray: 3 3;
v3 --"wdt:P793"--> c5
end
union1r <== or ==> union1l
end
end
subgraph union0r[" "]
style union0r fill:#abf,stroke-dasharray: 3 3;
v3 --"wdt:P31"--> c3
end
union0r <== or ==> union0l
end
v3 --"wdt:P1433"--> a2
a2 --"wdt:P123"--> v4
v3 --"rdfs:label"--> v2
v5 --"wdt:P2860"--> v3
bind2[/"count(?citation)"/]
v5 --o bind2
bind2 --as--o v6