Question: Mankiller is a 2017 documentary film directed by Valerie Red-Horse Mohl, concerning the life of Wilma Mankiller, was a community organizer and the first woman elected to serve as chief of which organization?
Sentence (from "Wilma Mankiller"): Mankiller's administration founded the Cherokee Nation Community Development Department and saw a population increase of Cherokee Nation citizens from 55,000 to 156,000.
Relevant evidence: No