PARIS, May 30 : Japan's SoftBank Group will invest €45 billion over the next five years in a push to build up artificial intelligence infrastructure in France, founder Masayoshi Son told the paper La Tribune Dimanche in an interview published on Saturday. Son said the investment, described as the biggest of its kind so far in Europe, would be made in the northern Hauts-de-France region. The overall sum SoftBank intends to invest in France will reach €75 billion, Son said.  The investment plans