Hirokazu Kore-eda’s near-future drama “ Sheep in the Box ,” in which a grieving couple welcomes a state-of-the-art humanoid as their son, premiered in competition at the Cannes Film Festival on Saturday to a 3.5-minute standing ovation. Kore-eda earned warm but not sustained applause after the credits rolled, with the ovation lasting 3.5 minutes until the director asked for the mic. One of the most enthusiastic applauders was James Franco, who was on his feet as soon as the film ended and kept