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?
Sentence (from "WCNN"): WCNN broadcasts with a power of 50,000 watts during the daytime, and 10,000 watts during nighttime, and is actually licensed to serve North Atlanta, with transmitter and towers located near Norcross, Georgia (in the northeastern Atlanta suburbs).
Relevant evidence: No