query-563f749ca5e4c8d5d05caa10ebbcd397

rq turtle/ttl

Obtaining the output type when convertingThe UI shows which units the various conversion factors correspond to. Where does that data come from? It isn't clear from querying the value of the property. The datatype of the conversion factors are simply xsd:decimal. : The following query retrieves both magnitude and unit for the example of {{Q:79738}}:Drrngrvy@

Use at

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX psv: <http://www.wikidata.org/prop/statement/value/>
PREFIX p: <http://www.wikidata.org/prop/>
select * where {
  # gigabyte
  wd:Q79738 p:P2442 / psv:P2442 [
    wikibase:quantityAmount ?amount ;
    wikibase:quantityUnit ?unit ;
  ] .
  ?unit rdfs:label ?unitLabel .
    filter (lang(?unitLabel) = "en")
}

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?amount"):::projected v3("?unit"):::projected v1("?unitLabel"):::projected a2((" ")) a1((" ")) c4(["wd:Q79738"]):::iri f0[["?unitLabel = 'en'"]] f0 --> v1 a1 --"wikibase:quantityAmount"--> v2 a1 --"wikibase:quantityUnit"--> v3 c4 --"p:P2442"--> a2 a2 --"p:statement/value/P2442"--> a1 v3 --"rdfs:label"--> v1