I want to know the answer to the following question:
Beyoncé was a featured artist on which singer's hit, Telephone?
All the background I'm provided with is that "The song topped the US Pop Songs chart, becoming the sixth number-one for both Beyoncé and Gaga, tying them with Mariah Carey for most number-ones since the Nielsen Top 40 airplay chart launched in 1992.". Is that enough to answer the question?