Thank you for providing the output of the function for each input. Based on the output, it appears that the function f(x) is selective for several concepts, including:
1. "roots" - The output for "roots" is 0.9986, indicating a strong association with this concept.
2. "writing" - The output for "writing" is 0.0121, indicating a moderate association with this concept.
3. "earthquake" - The output for "earthquake" is 0.0003, indicating a weak association with this concept.
4. "CEO" - The output for "CEO" is 0.0009, indicating a weak association with this concept.

Based on the output, it does not appear that the function is selective for any other concepts.

Here is a simple description of the function:
[DESCRIPTION]: The function f(x) is selective for the concepts of "roots", "writing", "earthquake", and "CEO". It returns a value between 0 and 1 indicating the degree of association between the input word and one of these concepts.

Please let me know if this description accurately reflects the behavior of the function, or if you would like me to run additional tests to gather more information.