Question: How many numbers of caualities?
Paraphrase: What are the number of casualties?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q179057 . ?ent wdt:P1590 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: 2020 Beirut explosions, Tlahuelilpan pipeline explosion, JSC “GosNII “Kristall” explosion, Deepwater Horizon explosion, 2018 Magnitogorsk building collapse