an Entity references as follows:
John Chiang or Chiang Hsiao-yen (Chinese: 蔣孝嚴; pinyin: Jiǎng Xiàoyán; born March 1, 1942), formerly surnamed Chang (章; Zhāng), is a Kuomintang politician in Taiwan. He is the grandson of Chiang Kai-shek, former leader of the Republic of China.