Given the question: Information: - Naples (Neapolitan: "Napule" or ; meaning "new city") is the capital of the Italian region Campania and the third-largest municipality in Italy, after Rome and Milan. In 2015, around 975,260 people lived within the city's administrative limits. The Metropolitan City of Naples had a population of 3,115,320. Naples is the 9th-most populous urban area in the European Union with a population of between 3 million and 3.7 million. About 4.4 million people live in the Naples metropolitan area, one of the largest metropolises on the Mediterranean Sea. - The Most Serene House of Braganza, or the Brigantine Dynasty ("Dinastia Brigantina"), is a dynasty of emperors, kings, princes, and dukes of Portuguese origin, a branch of the House of Aviz. - Portugal (Portuguese: ), officially the Portuguese Republic (Portuguese: ), is a country on the Iberian Peninsula in Southwestern Europe. It is the westernmost country of mainland Europe. To the west and south it is bordered by the Atlantic Ocean and to the east and north by Spain. The PortugalSpain border is long and considered the longest uninterrupted border within the European Union. The republic also includes the Atlantic archipelagos of the Azores and Madeira, both autonomous regions with their own regional governments. - MILAN ("milan(e)" is French for kite) is a European anti-tank guided missile. Design of the MILAN started in 1962, it was ready for trials in 1971, and was accepted for service in 1972. It is a wire guided SACLOS (semi-automatic command to line-of-sight) missile, which means the sight of the launch unit has to be aimed at the target to guide the missile. The MILAN can be equipped with a MIRA or MILIS thermal sight to give it night-firing ability. - The House of Aviz (modern Portuguese: Avis) was the second dynasty of the kings of Portugal. In 1385, the Interregnum of the 1383-1385 crisis ended when the Cortes of Coimbra proclaimed the Master of the monastic military Order of Aviz as King John I. John was the natural (illegitimate) son of King Peter I and Dona Teresa Lourenco, and so was half-brother to the last king of the Portuguese House of Burgundy or "Afonsine Dynasty", Ferdinand I of Portugal. The House of Aviz continued to rule Portugal until Philip II of Spain inherited the Portuguese crown with the Portuguese succession crisis of 1580. - A queen consort is the wife of a reigning king (or an empress consort in the case of an emperor). In Brunei, the wife of the Sultan is known as a "Raja Isteri" with prefix "Pengiran Anak", equivalent with queen consort in English, as were the consorts of tsars when Bulgaria was still a monarchy. A queen consort usually shares her husband's social rank and status. She holds the feminine equivalent of the king's monarchical titles, but historically, she does not share the king's political and military powers. A queen regnant is a queen in her own right with all the powers of a monarch, who (usually) has become queen by inheriting the throne upon the death of the previous monarch. - Dona Maria Pia of Savoy (16 October 1847 5 July 1911) was a Portuguese Queen consort, spouse of King Luis I of Portugal. On the day of her baptism, Pope Pius IX, her godfather, gave her a Golden Rose. Maria Pia was married to Luis on the 6 October 1862 in Lisbon. She was the grand mistress of the Order of Saint Isabel. - Spain, officially the Kingdom of Spain, is a sovereign state largely located on the Iberian Peninsula in southwestern Europe, with two large archipelagos, the Balearic Islands in the Mediterranean Sea and the Canary Islands off the North African Atlantic coast, two cities Ceuta and Melilla in the North African mainland and several small islands in the Alboran Sea near the Moroccan coast. Its mainland is bordered to the south and east by the Mediterranean Sea except for a small land boundary with Gibraltar; to the north and northeast by France, Andorra, and the Bay of Biscay; and to the west and northwest by Portugal and the Atlantic Ocean. It is the only European country to have a border with an African country (Morocco) and its African territory accounts for nearly 5% of its population, mostly in the Canary Islands but also in Ceuta and Melilla. - Infante D. Afonso , Duke of Porto ( Portuguese pronunciation : ( fosu ) ; 31 July 1865 in Palace of Ajuda , Lisbon -- 21 February 1920 in Naples , Italy ) was a Portuguese Infante of the House of Braganza , the son of King Dom Luis I of Portugal and his wife , Dona Maria Pia of Savoy . Given the information above, choose from the list below the object entity that exhibits the relation 'father' with the subject 'afonso'. Choices: - biscay - ferdinand i of portugal - luis i of portugal - milan - philip ii of spain - sultan - the sultan
The answer is:
luis i of portugal