When I view my movie stats there is a duplicate genre for TV Movie. One has correct capitalization, and your current algorithms recognize that data point. There is a 2nd genre called "TV movie", which is incorrectly capitalized. Your system does not recognize this as a usable data point. Somewhere in your lines of code a single letter is mis-typed, resulting in a duplication of the TV Movie genre label (which likely has very few movies assigned to it, if any).