Question: What is the holding company owned by Black Rock with the highest total assets?
Paraphrase: Give me the name of the holding company owned by Black Rock with the highest total assets.
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q219577 . ?ent wdt:P2403 ?obj . ?ent wdt:P127 wd:Q219635 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Alphabet Inc., Hertz Global Holdings