What is the {isotope of bismuth} with the {MAX(half-life)} ?
Which bismuth isotope has the longest rate of decay?
Which isotope of bismuth has the longest half-life?
SELECT ?u WHERE { ?u rdf:type ontology:isotope_of_bismuth . ?u property:half-life ?t }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q1372372>.
?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/P2114>.
?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:Q1372372 . ?ent wdt:P2114 ?obj } ORDER BY DESC(?obj)LIMIT 5 
bismuth-209 bismuth-210m bismuth-208 bismuth-189 bismuth-196