Definition: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: How many siblings did Paul have the year Christian VII surrendered Oldenburg to his mother? Passage:In 1773, Christian VII of Denmark surrendered Oldenburg to Catherine the Great in exchange for her son and heir Paul's share in the condominial royal-ducal government of the Duchy of Holstein and his claims to the ducal share in the government of the Duchy of Schleswig; Oldenburg went to Frederick August, Administrator of the Prince-Bishopric of Lübeck, the representative of a younger branch of the family, and in 1777 the county was raised to the rank of a duchy. The duke's son William, who succeeded his father in 1785, was a man of weak intellect, and his cousin Peter, Administrator of the Prince-Bishopric of Lübeck, acted as regent and eventually, in 1823, inherited the throne, holding the Prince-Bishopric of Lübeck and Oldenburg in personal union.


b