Although director Olga Kosanović was born and raised in Austria, she is not allowed to be Austrian. Her first attempt at naturalization failed. One contemptuous social media comment summed it up: “If a cat gives birth in the Spanish Riding School, that doesn’t make the kittens Lipizzaners.”What notion of identity underlies a legal system that divides society into “us” and “them”? A film about belonging — and about a second attempt.