Question: Which Isotope of osmium has both the most excess mass and decays into tungsten-159?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q1190207 . ?ent wdt:P2160 ?obj . ?ent wdt:P816 wd:Q18882822 } ORDER BY DESC(?obj)LIMIT 5