Are Sean Astin and Mackenzie Astin children of  Patty Duke?
ASK WHERE { wd:Q232538 wdt:P40 wd:Q189351 . wd:Q232538 wdt:P40 wd:Q2575752 }
patty duke: Q232538 sean astin: Q189351 patty duke: Q232538 mackenzie astin: Q2575752