3 artificial	intelligence
      2 intelligence	AI
      1 Zero	the
      1 within	days
      1 to	researchers
      1 to	master
      1 them	according
      1 the	system
      1 the	Google
      1 the	Artificial
      1 the	ancient
      1 system	learnt
      1 system	
      1 s	artificial
      1 researchers	at
      1 playing	against
      1 owned	British
      1 or	by
      1 of	human
      1 no	longer
      1 master	the
      1 longer	constrained
      1 limits	of
      1 learnt	by
      1 learn	from
      1 known	as
      1 knowledge	Dubbed
      1 itself	within
      1 intelligence	computer
      1 humans	or
      1 human	knowledge
      1 Google	s
      1 Google	owned
      1 game	known
      1 from	humans
      1 Dubbed	AlphaGo
      1 developing	the
      1 DeepMind	the
      1 days	to
      1 constrained	by
      1 computer	no
      1 company	developing
      1 Chinese	board
      1 by	playing
      1 by	limits
      1 by	itself
      1 British	artificial
      1 board	game
      1 at	DeepMind
      1 as	learn
      1 ancient	Chinese
      1 AlphaGo	Zero
      1 AI	system
      1 AI	company
      1 against	them
      1 according	to