Question: What is the day the UN General Assembly was founded?
Paraphrase: When was the UN General Assembly was founded?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P112 wd:Q47423 . ?sbj wdt:P31 wd:Q2558684 } 
Answer: World Habitat Day, World Science Day for Peace and Development, International Day of Democracy