[DESCRIPTION]: The function is selective for the concept of social media platforms. It returns high values near 1 for inputs "Reddit" and "Twitter" (0.9988 and 0.9897), which are popular social media platforms. In contrast, it returns low values for other inputs unrelated to social media, such as "rhythym," "Lake Superior," "crops," "rocks," "genome," "stanza," and "reading." The input "artistic" has a somewhat higher value (0.1824) but is still not as strong as the social media platforms.