A set of SPARQL examples
Authors (females) with expertise in proteomics and computational biology.
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#>
#title: Authors (females (Q6581072)) with expertise in proteomics (Q471857) and computational biology (Q177005)
SELECT ?author ?authorLabel ?works ?awards WHERE {
{
SELECT DISTINCT ?author ?authorLabel (COUNT(DISTINCT ?output) AS ?works) (COUNT(DISTINCT ?award) AS ?awards) WHERE {
{
SELECT DISTINCT * WHERE {
{ ?author (^wdt:P50/wdt:P921) wd:Q471857, wd:Q177005. }
UNION
{ ?author wdt:P101 wd:Q471857, wd:Q177005.}
?author wdt:P21 wd:Q6581072;
rdfs:label ?authorLabel.
FILTER((LANG(?authorLabel)) = "en")
}
}
OPTIONAL { ?author wdt:P166 ?award. }
OPTIONAL { ?author ^wdt:P50 ?output. }
}
GROUP BY ?author ?authorLabel
}
}
ORDER BY DESC (?works) DESC (?awards) DESC (?count)
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v5("?author"):::projected
v4("?authorLabel"):::projected
v6("?award")
v8("?awards"):::projected
v3("?count")
v7("?output")
v8("?works"):::projected
a1((" "))
c4(["wd:Q471857"]):::iri
c8(["wd:Q6581072"]):::iri
c5(["wd:Q177005"]):::iri
f0[["?authorLabel = 'en'"]]
f0 --> v4
subgraph union0[" Union "]
subgraph union0l[" "]
style union0l fill:#abf,stroke-dasharray: 3 3;
v5 --"wdt:P101"--> c4
v5 --"wdt:P101"--> c5
end
subgraph union0r[" "]
style union0r fill:#abf,stroke-dasharray: 3 3;
a1 --"wdt:P50"--> v5
a1 --"wdt:P921"--> c4
a1 --"wdt:P50"--> v5
a1 --"wdt:P921"--> c5
end
union0r <== or ==> union0l
end
v5 --"wdt:P21"--> c8
v5 --"rdfs:label"--> v4
subgraph optional0["(optional)"]
style optional0 fill:#bbf,stroke-dasharray: 5 5;
v5 -."wdt:P166".-> v6
end
subgraph optional1["(optional)"]
style optional1 fill:#bbf,stroke-dasharray: 5 5;
v7 -."wdt:P50".-> v5
end
bind3[/"count(?output)"/]
v7 --o bind3
bind3 --as--o v8
bind4[/"count(?award)"/]
v6 --o bind4
bind4 --as--o v8