Question: who is the significant person of mark zuckerberg?
Paraphrase: What is the name of Mark Zuckerberg's spouse?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P3342 wd:Q36215 . ?sbj wdt:P31 wd:Q5 } 
Answer: Dustin Moskovitz, Lola Omolola