Lily , do you know Lizzy ?   Lizzy who ?   Lizzy smith .   Of course I do .   Then , Do you know her younger sister ?   You mean Mary ?   Yes .   Sure . I know her elder sister Sue and younger sister Mary .   Oh , not bad . Then do you know her mother ?   Yes , certainly . I know her mother and father , and brother and sisters , too .   That sounds terrific .   Why do you ask me these questions ? 