Instructions: In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Input: Question: Who is the oldest member of Olga's paternal family that was present for the nuptials? Passage:Present for the nuptials in Patmos were several members of Olga's paternal family, including Queen Sofia of Spain (nee Princess of Greece and Denmark), former King Constantine II of the Hellenes and his consort Queen Anne Marie (nee Princess of Denmark), Prince Michael of Greece and Denmark and his wife, Marina (bride's parents), and Princess Irene of Greece and Denmark. With the exception of 78-year-old Margherita, Dowager Archduchess of Austria-Este (nee Princess of Savoy-Aosta), all members of the Aosta branch of the House of Savoy were in attendance, i.e. Prince Amedeo of Savoy, 5th Duke of Aosta (bridegroom's father) and his consort Silvia, Duchess of Aosta, Princess Claude of Orleans ( Princess of France, bridegroom's mother), as well as Aimone's two full sisters, Princess Bianca Countess Arrivabene-Valenti-Gonzaga and Princess Mafalda Madame Lombardo di San Chirico, as well as Maria-Cristina (nee Princess of Savoy-Aosta) and her husband Prince Casimir of Bourbon-Two Sicilies. From the senior branch of the Italian royal family Princess Maria Gabriella of Savoy (daughter of the late King Umberto II of Italy) was present, as she had been at the Athens wedding of Olga's parents in 1965.
Links: a. Marina Karella b. Princess Maria Gabriella of Savoy c. Queen Sofia of Spain d. Patrilineality
Output:
c