Question: Are Sean Astin and Mackenzie Astin children of  Patty Duke?
Paraphrase: Are Patty Duke's children named Sean and Mackenzie Astin?
SPARQL (Wikidata): ASK WHERE { wd:Q232538 wdt:P40 wd:Q189351 . wd:Q232538 wdt:P40 wd:Q2575752 }