LONDON — Distributor SquareOne Entertainment has acquired German-speaking rights to eight films coming out of the Cannes Market, including Marlon Wayans’ comedy “50 Shades of Black.” Other acquisitions include dance film “High Strung,” post-apocalyptic sci-fi film “She Who Brings Gifts,” and Erik Van Looy’s thriller “De Premier.” “We are delighted to have acquired such a...