Based on the experiments and input-output pairs, the function f(x) appears to be selective for concepts related to geographical and spatial features or elements. The closer the output value is to 1, the stronger the association is with the geographical and spatial concept. Examples of words with high output values (close to 1) include "north pole", "map", "jungle", "ocean", "compass", "satellite", "mountain", "river", "forest", "lagoon", and "canyon".