OAKMONT, Pennsylvania :The rules of golf can be complex but at this week's U.S. Open an interactive artificial intelligence avatar is offering a glimpse into how golfers can get instant answers to questions, even what to do if you encounter an alligator on the course. Inside a hospitality suite overlooking the 17th green at Oakmont Country Club are three demo terminals that feature an avatar of USGA rules expert Jay Roberts standing with steepled fingertips and awaiting any questions about golf