The function f(x) takes word inputs and returns a value between 0 and 1, indicating association with a particular concept. The function is selective for the following concepts:

* Crystals (output value of 0.9967)
* Breaking Bad (output value of 0.0007)
* Beverly Hills (output value of 0.0005)

The function is less associated with the other inputs, such as "voice actors" (output value of 0.0009), "rhyme" (output value of 0.0006), "democracy" (output value of 0.0002), "France" (output value of 0.0264), "guilty" (output value of 0.0005), "helicopter" (output value of 0.0010), and "minerals" (output value of 0.9984).

Please let me know if this description is accurate or if you would like me to run additional tests to refine the description further.