Based on my analysis of the inputs and outputs, the function f(x) appears to be selective for concepts related to emotions, ethics, or justice. In particular, the concepts of fear, justice, and empathy show higher outputs compared to other categories. However, some individual words like valley and diving also showed higher outputs, but these words are not easy to generalize into a specific concept. The function might be selective for few concepts, but a stronger focus seems to be on emotions and ethics.