I want to know the answer to the following question:
How many viewers did the largest rock star benefit concert attract?
All the background I'm provided with is that "The concert is listed in the Guinness Book of Records as "The largest rock star benefit concert", as it was televised to over 1.2 billion viewers worldwide, and raised over £20,000,000 for AIDS charities.". Is that enough to answer the question?
Answer: yes