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

[EX Q]: What is one example of hydrogen cations?, Context: To avoid the implication of the naked "solvated proton" in solution, acidic aqueous solutions are sometimes considered to contain a less unlikely fictitious species, termed the "hydronium ion" (H3O+). However, even in this case, such solvated hydrogen cations are more realistically conceived as being organized into clusters that form species closer to H9O+4. Other oxonium ions are found when water is in acidic solution with other solvents.
[EX A]: hydronium ion

[EX Q]: What, in the article, happened 65 years before YSMI was renamed to YSMU?, Context: On the basis of the expansion and development of Yerevan State University a number of higher educational independent Institutions were formed including Medical Institute separated in 1930 which was set up on the basis of medical faculty. In 1980 Yerevan State Medical University was awarded one of the main rewards of the former USSR the Order of Labor red Banner for training qualified specialists in health care and valuable service in the development of Medical Science. In 1995 YSMI was renamed to YSMU and since 1989 it has been named after Mkhitar Heratsi, the famous medieval doctor. Mkhitar Heratsi was the founder of Armenian Medical school in Cilician Armenia. The great doctor played the same role in Armenian Medical Science as Hippocrates in Western, Galen in Roman, Ibn Sina in Arabic medicine.
[EX A]: Medical Institute separated

[EX Q]: The Qing struggled with that?, Context: Yet controlling the "Mandate of Heaven" was a daunting task. The vastness of China's territory meant that there were only enough banner troops to garrison key cities forming the backbone of a defense network that relied heavily on surrendered Ming soldiers. In addition, three surrendered Ming generals were singled out for their contributions to the establishment of the Qing dynasty, ennobled as feudal princes (), and given governorships over vast territories in Southern China. The chief of these was Wu Sangui, who was given the provinces of Yunnan and Guizhou, while generals Shang Kexi and Geng Jingzhong were given Guangdong and Fujian provinces respectively.
[EX A]:
controlling the "Mandate of Heaven"