By Michael Roddy Teenaged Sara (Florence Hunt, winsome) has a question for her mother Amanda (Juliette Binoche, superb) after they walk in on octogenerian Martin (Tom Courtenay, ditto) having sex with his dementia-stricken wife, Amanda's mom Leslie (Anne Calder-Marshall, convincing) in the elderly couple's north London townhouse. How, at his age, does he perform the…Read more Courtenay, Binoche, shine in Berlinale dementia film “Queen at Sea”