Refer to the passage below and then answer the question afterwards in the same language as the passage:

Passage: The 1908 Summer Olympics, officially the Games of the IV Olympiad, were an international multi-sport event which was held in 1908 in London, United Kingdom from 27 April to 31 October 1908.These games were originally scheduled to be held in Rome, but were re-located on financial grounds following a disastrous eruption of Mount Vesuvius in 1906. They were the fourth chronological modern Olympic Games in keeping with the now-accepted four-year cycle as opposed to the alternate four-year cycle of the proposed Intercalated Games. The IOC president for these Games was Baron Pierre de Coubertin. Lasting a total of 187 days, or 6 months and 4 days, these games were the longest in modern Olympics history.

Question: Baron Pierre de Coubertin held what role in the 1908 Olympics?
IOC president