Task: Explanation
Input (English): WNNX (100.5 FM, "Rock 100.5") is an Atlanta radio station airing a Mainstream Rock format. It is owned and operated by Cumulus Media. The station broadcasts from the same building as its other Cumulus Atlanta sister stations WWWQ ("Q100"), W255CJ 98.9 "99X", W250BC 97.9 "OG 97-9", WKHX 101.5 "Kicks 101-5", WYAY FM 106.7 "NewsRadio 106.7", and Dickey Broadcasting's WCNN "680 The Fan" and W229AG 93.7 in Sandy Springs near the Georgia Highway 400 and Interstate 285 interchange. WNNX's main transmitter is located in downtown Atlanta atop the Westin Peachtree Plaza Hotel. Question: What are the call letters of the sports radio station, also known as "The Fan" that broadcasts from the same building as sister station WNNX, a mainstream rock station? Answer: WCNN
Output (English):  The station broadcasts from the same building as its other Cumulus Atlanta sister stations WWWQ Q100, W255CJ 98.9 99X, W250BC 97.9 OG 979, WKHX 101.5 Kicks 1015, WYAY FM 106.7 NewsRadio 106.7, and Dickey Broadcastings WCNN 680 The Fan and W229AG 93.7 in Sandy Springs near the Georgia Highway 400 and Interstate 285 interchange.