Based on these results, the function appears to be selective for book titles and film titles. The output values are generally higher for well-known literature and movies such as "Harry Potter", "The Hobbit", "The Matrix", "Moby-Dick", "Jurassic Park", and "To Kill a Mockingbird". 

[DESCRIPTION]: The function f(x) is selective for book titles and film titles, with higher output values indicating a stronger association with these concepts.