In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Tibet's incursions into Sichuan can be classified as what during the Tang Dynasty?, Context: Sichuan came under the firm control of a Chinese central government during the Sui dynasty, but it was during the subsequent Tang dynasty where Sichuan regained its previous political and cultural prominence for which it was known during the Han. Chengdu became nationally known as a supplier of armies and the home of Du Fu, who is sometimes called China's greatest poet. During the An Lushan Rebellion (755-763), Emperor Xuanzong of Tang fled from Chang'an to Sichuan. The region was torn by constant warfare and economic distress as it was besieged by the Tibetan Empire.
constant

Why did universities begin participating less in scientific research?, Context: Scientific academies and societies grew out of the Scientific Revolution as the creators of scientific knowledge in contrast to the scholasticism of the university. During the Enlightenment, some societies created or retained links to universities. However, contemporary sources distinguished universities from scientific societies by claiming that the university's utility was in the transmission of knowledge, while societies functioned to create knowledge. As the role of universities in institutionalized science began to diminish, learned societies became the cornerstone of organized science. Official scientific societies were chartered by the state in order to provide technical expertise. Most societies were granted permission to oversee their own publications, control the election of new members, and the administration of the society. After 1700, a tremendous number of official academies and societies were founded in Europe, and by 1789 there were over seventy official scientific societies. In reference to this growth, Bernard de Fontenelle coined the term "the Age of Academies" to describe the 18th century.
sources distinguished universities from scientific societies by claiming that the university's utility was in the transmission of knowledge

Which OECD average is higher, the percentage of 25- to 64-year-olds that have attained tertiary education or the percentage of people aged 55–64 that hold a higher education degree?, Context: Education in Israel is highly valued in the national culture with its historical values dating back to Ancient Israel and was viewed as one fundamental blocks of ancient Israelite life. Israeli culture views higher education as the key to higher mobility and socioeconomic status in Israeli society. The emphasis of education within Israeli society goes to the gulf within the Jewish diaspora from the Renaissance and Enlightenment Movement all the way to the roots of Zionism in the 1880s. Jewish communities in the Levant were the first to introduce compulsory education for which the organized community, not less than the parents, was responsible for the education of the next generation of Jews. With contemporary Jewish culture's strong emphasis, promotion of scholarship and learning and the strong propensity to promote cultivation of intellectual pursuits as well as the nations high university educational attainment rate exemplifies how highly Israeli society values higher education. The Israeli education system has been praised for various reasons, including its high quality and its major role in spurring Israel's economic development and technological boom. Many international business leaders and organizations such as Microsoft founder Bill Gates have praised Israel for its high quality of education in helping spur Israel's economic development. In 2012, the country ranked second among OECD countries (tied with Japan and after Canada) for the percentage of 25- to 64-year-olds that have attained tertiary education with 46 percent compared with the OECD average of 32 percent. In addition, nearly twice as many Israelis aged 55–64 held a higher education degree compared to other OECD countries, with 47 percent holding an academic degree compared with the OECD average of 25%. In 2012, the country ranked third in the world in the number of academic degrees per capita (20 percent of the population).
the percentage of 25- to 64-year-olds that have attained tertiary education