What is the {astronomical observatory} with the {MAX(observing time available)} ?
Let me know the cosmic observatory with the foremost watching time?
Tell me the astronomical observatory with the most observing time?
SELECT ?n WHERE { ?n rdf:type ontology:astronomical_observatory . ?n property:observing_time_available ?i }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q1254933>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3891>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .}
ORDER BY DESC(?obj)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q1254933 . ?ent wdt:P3891 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Green Bank Observatory Kitt Peak National Observatory Xinglong Station Shamakhi Astrophysical Observatory Tartu Observatory