Task: Question Answering
Input (English): Passage: The board of directors has ultimate control over the organization, but typically an executive director is hired. In some cases, the board is elected by a membership, but commonly, the board of directors is self-perpetuating. In these "board-only" organizations, board members nominate new members and vote on their fellow directors nominations. Part VI, section A, question 7a of the Form 990 asks "members, stockholders, or other persons who had the power to elect or appoint one or more members of the governing body?". Question: How is the board of directors most often chosen?
Output (English): self-perpetuating