Punxsutawney Phil tells us whether it will be a long winter or not

As we've seen over the last few days - it's been a pretty brutal winter for much of the United States. The polar vortex leading to record low temperatures and lots and lots of snow. But how long will this cold weather last? Someone who - it's claimed - has the answer is Punxsutawney Phil - the famous groundhog. So what's his verdict? The BBC's Tim Allman will tell us.