Analyzing vocabulary of newspaper articles I

Title	Topic	Key words	Topic related expressions	URL
'Humans killed off Australia's giant beasts'	SCIENCE	Scientists Vertebraste Extinction  Landscape. fósil	Ecological changes Animal extinction climate change	http://www.bbc.co.uk/news/science-environment-17488447
Colombia forces 'kill 35 FARC rebels' in Meta	POLITICS	Tropos Commander negotiations	reopen negotiations  new strategy  guerrilla group	http://m.bbc.co.uk/news/world-latin-america-17518200
Nicaragua bids to stem deforestation with eco-soldiers	ECOLOGYCAL	deforestation environment economic reserves	nature reserves government data criminal organisation	http://www.bbc.co.uk/news/world-latin-america-17062806
Susan Boyle musical opens in Newcastle	ENTERTAINMENT	musical dream superstar	global superstar  musical's producer  sugary version	http://www.bbc.co.uk/news/entertainment-arts-17532491
Titanic/ Kate Winslet and James Cameron at 3D premiere	ENTERTAINMENT	Premiere Hit screen	global hit performance big screen	http://www.bbc.co.uk/news/entertainment-arts-17526845