Evaluate the valence intensity of the following sentence, considering the mood of the author. Give a score between 0 and 1 inclusive, where 0 is the most negative and 1 is the most positive.
Sentence: The Colombian constitution is problematic in that it provides little guide as to what exactly forms an indigenous group; the concept of culture is so complex and divergent that establishing self-determination in the eyes of the Colombian government requires emphasizing differences.