Given the task definition and input, reply with output. In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Passage: He was maitre des suppliques under Francis I of France. He was promoted to the metropolitan see of Bordeaux. In 1525, the queen regent, Louise of Savoy sent Bishop Gramont to Spain to secure the freedom of Francis I. In 1526, he was imprisoned by Charles V, Holy Roman Emperor, who was angry at his role in founding the League of Cognac; when England and France arrested the imperial ambassadors, the emperor ordered Bishop Gramont released. Returning to the Kingdom of France, he was despatched to the Kingdom of England in an attempt to encourage Henry VIII of England to divorce Catherine of Aragon and form a French alliance by marrying Marguerite de Navarre, the widow of the king's brother Charles IV, Duke of Alencon. He was then sent as French ambassador to the Holy See.
Link Information: Charles V (24 February 1500 21 September 1558) was Holy Roman Emperor and Archduke of Austria from 1519, King of Spain (Castile and Aragon, as Charles I) from 1516, and Lord of the Netherlands as titular Duke of Burgundy from 1506. Question: Which country's emperor had Gramont imprisoned due to his role in founding the League of Cognac?
Answer: Roman