query-44007053ce6c18dcc64dd3b655238549

Conversely this is type of bigger entities reservoirs are part of:

Use at

https://query.wikidata.org/sparql

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX bd: <http://www.bigdata.com/rdf#>
select ?dam ?bigitemLabel ?class ?classLabel {
  ?dam wdt:P279*/wdt:P31 wd:Q131681  .
  ?dam wdt:P361 ?bigitem .
  ?bigitem wdt:P31 ?class .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}

Query found at

https://www.wikidata.org/wiki/Wikidata:Project_chat/Archive/2018/01

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?bigitem") v3("?class"):::projected v1("?dam"):::projected a1((" ")) c6(["bd:serviceParam"]):::iri c8(["en"]):::literal c3(["wd:Q131681"]):::iri v1 --"wdt:P279"--> a1 a1 --"wdt:P31"--> c3 v1 --"wdt:P361"--> v2 v2 --"wdt:P31"--> v3 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c6 --"wikibase:language"--> c8 end