1) Emma Stone is an American actress known for her roles in films such as "La La Land," "Easy A," and "The Help." She has received critical acclaim and several awards, including an Academy Award, for her performances, establishing herself as a talented and versatile actress.

2) The development of artificial intelligence (AI) has led to advancements in areas such as machine learning, natural language processing, and computer vision.

3) The political system of the People's Republic of China is based on the Communist Party's leadership, with the General Secretary holding significant authority and influence over the country's policies and governance.

4) The highest-grossing film of all time is "Avengers: Endgame," which has earned over $2.79 billion at the global box office.