The function f(x) seems to be selective for certain concepts. It assigns a value between 0 and 1 to each input word, where a value closer to 1 indicates association with a particular concept. 

Upon testing with different input words, here are the observations:

- Words related to sports like "tennis" and "badminton" have high values close to 1, indicating an association with the concept of sports.
- Words like "doctor" and "acting" have low values close to 0, suggesting little association with the concept.
- Proper nouns like "Disneyland" and "Passover" also have low values close to 0, indicating minimal association with any specific concept.
- The word "female" has an intermediate value of 0.0637, indicating a partial association with a concept related to femininity.
- Words like "minerals" and "tsunami" have relatively low values suggesting limited association with any specific concept, but not as low as the previous examples.
- The word "pitcher" has a moderate value of 0.0102, suggesting partial association with a concept related to pitchers, possibly in a sports context.

Overall, the function f(x) appears to be selective for the concept of sports, as indicated by the high values associated with sports-related words "tennis" and "badminton." It also shows partial associations with concepts related to femininity and pitchers. However, the function assigns low values to words like "doctor," "acting," "Disneyland," and "Passover," indicating minimal or no association with any specific concept in those cases.