I want to know the answer to the following question:
How many PGA championships has Southern Hills held?
All the background I'm provided with is that "Regular LPGA tournaments are held at Cedar Ridge Country Club in Tulsa, and major championships for the PGA or LPGA have been played at Southern Hills Country Club in Tulsa, Oak Tree Country Club in Oklahoma City, and Cedar Ridge Country Club in Tulsa.". Is that enough to answer the question?
Answer: no