Teacher:In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.
Teacher: Now, understand the problem? Solve this instance: Question: How long was the reign of the Roman emperor given the role primus inter pares? Passage:Primus inter pares (, ) is a Latin phrase meaning first among equals. It is typically used as an honorary title for someone who is formally equal to other members of their group, but is accorded unofficial respect, traditionally owing to their seniority in office. Historically, the princeps senatus of the Roman Senate was such a figure and initially bore only the distinction that he was allowed to speak first during debate. Also, Constantine the Great was given the role of primus inter pares. However, the term is also often used ironically or self-deprecatingly by leaders with much higher status as a form of respect, camaraderie, or propaganda. After the fall of the Republic, Roman emperors initially referred to themselves only as princeps despite having power of life and death over their "fellow citizens". Various modern figures such as the chair of the United States Federal Reserve System, the prime minister of parliamentary countries, the federal president of Switzerland, the chief justice of the United States, the chief justice of the Philippines, the archbishop of Canterbury of the Anglican Communion and the ecumenical patriarch of the Eastern Orthodox Church fall under both senses: bearing higher status and various additional powers while remaining still merely equal to their peers in important senses.

Student:
b