i'm catherine kobayashi in tokyo. >>> people in japan have marked the 70th anniversary of the country'sstitution. prime minister says he wants to see it revised in the year 2020. shinzo abe outlined his goal in a video address delivered at a gathering in tokyo. looking back on the 1964 tokyo olympics, he said those games gave japan the confidence to achieve rapid growth and become a developed nation. he said 2020 is also significant one for the people of japan because tokyo will once again host the summer games. the prime minister add h