After analyzing the results from multiple tests, I have observed a potential pattern. Here's a simple description of the function f(x):

[DESCRIPTION]: The function appears to be selective for physical structures and locations, with higher outputs indicating a stronger association with such concepts. Examples of words with higher output values include "building" (0.3381), "bridge" (0.2393), and "house" (0.0447). However, the function does not exclusively map to this concept, and the selectivity varies for different inputs.