TOKYO — Nippon Telegraph and Phone will make investments 8 trillion yen ($59 billion) over 5 years in synthetic intelligence, knowledge facilities and different progress areas below a plan introduced Friday.

The 8 trillion yen is a part of the 12 trillion yen in whole spending below this medium-term plan. Not less than 1.5 trillion yen goes towards increasing and upgrading knowledge facilities. The digital enterprise, which incorporates AI and robots, will get not less than 3 trillion yen.