Amendment: sport rather than sports
URL containing any of the following words is classified as soft news:
"sport|entertainment|arts|fashion|style|lifestyle|leisure|celeb|movie|music|gossip|food|travel|horoscope|weather|gadget"
URL containing any of following words is classified as hard news:
"politi|usnews|world|national|state|elect|vote|govern|campaign|war|polic|econ|unemploy|racis|energy|abortion|educa|healthcare|immigration"
Note that it is based on patterns existing in a small set of domains. See paper for details.