Teacher:In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
Teacher: Now, understand the problem? Solve this instance: Article: As we know, the concept of the Beijing 2008 Olympic Games is "Green Olympics, High-tech Olympics and People's Olympics." _ . Among them "Green Olympics" embraces the essence of the 3000-year long Chinese philosophy, namely harmony and unity of nature and human existence. On the World Environment Day in 2003, Beijing Organizing Committee for the 2008 Olympic Game began the Green Office Project. _ . On September 24, 2005, the logo of the Green Olympics was shown at the Beijing Young Palace. _ . It consists of the crown of a tree and the shape of a human being that are used to create the form of a large tree reaching the sky. The image represents harmony and unity between human beings and nature. Just like swinging color1ed strips that surround and cross each other, the green lines form a crown of tree and recall flowers in full bloom, expressing the sustainable development of environment protection.
Answer: This concept includes three themes.
Student:
Let's participate in green actions, such as beautifying the environment , protecting the environment and saving resources. _ .