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: Herzog is obviously looking for a moral to his fable , but the notion that a strong , unified showing among Germany and Eastern European Jews might have changed 20th-Century history is undermined by Ahola 's inadequate performance .