Based on the experiments, the function f(x) appears to be selective for words associated with water and aquatic life. Words strongly related to these concepts, like "ocean," "penguin," "whale," "fish," "shark," "dolphin," "coral," "tide," "waves," and "sea" yield high output values (closer to 1), whereas other words not directly related return lower values. Additionally, some words moderately associated with these concepts, like "boat" and "beach," produce somewhat higher output values compared to unrelated words. The function seems to be identifying the degree of association between the input word and water or aquatic life concepts.