Why Japanese Won The Nobel Prizes?

Ken Ito addressed Japan has a lot of advantages to win the Nobel Prize because Japan is only one country to have self-absorbed technologies except Europe and the USA, and The purposes to invent in Japan are not for military. In addition, he pointed students can learn everything until the doctor degrees in Japanese language only. It's very rare.
Ken also told the Nobel Prize Winners are selected by the Swedish Academy with some political reasons. It become more interesting if you wondered the reasons why the scientists won the prize in the year. It's a strong message from the academy at that time.