Please answer the following question: Information: - Dulce of Aragon ( or of Barcelona ) ( 1160 -- 1 September 1198 ) was Queen consort to King Sancho I of Portugal . As the eldest daughter of Ramon Berenguer IV , Count of Barcelona and his wife , Queen Petronila of Aragon , she was the sister of the future King Alfonso II of Aragon . Her bethrothal to infante Sancho , son Afonso Henriques , the first king of Portugal , was celebrated when she was eleven years old and the marriage in 1174 . Not much is known about her life prior to her arrival in Portugal or of the wedding tokens she received upon her marriage . '' A beautiful and excellent lady , quiet and modest , her personality coinciding with her name , '' Dulce was used as a commodity to seal an alliance which aimed to '' strengthen Portugal and to contain the expansionism of Castile and Leon '' and she played the role that was expected of her as a wife and as the mother of numerous children '' . At the same time , the marriage compensated for the broken engagement of her husband 's sister , Infanta Mafalda with her brother , the future king Alfonso II of Aragon . With the death of King Afonso Henriques in 1185 , her husband ascended the throne and she became Queen consort of Portugal . In his first will , executed in 1188 , her husband gave her the income from Alenquer , of the lands along the banks of the Vouga River , of Santa Maria da Feira and of Oporto . Dulce did not live long after the birth of her last two daughters , Branca and Berengaria , probably twins , and died in 1198 probably succumbing to the plague and weakened by the successive childbirths . She was buried in the Monastery of Santa Cruz in Coimbra . - Sancho I, nicknamed "the Populator", King of Portugal (Coimbra, 11 November 1154 26 March 1211) was the second but only surviving legitimate son and fifth child of Afonso I of Portugal by his wife, Maud of Savoy. Sancho succeeded his father and was crowned in Coimbra when he was 31 years old on 9 December 1185. He used the title King of Silves from 1189 until he lost the territory to Almohad control in 1191. - Alfonso II (125 March 1157 25 April 1196), called the Chaste or the Troubadour, was the King of Aragon and, as Alfons I, the Count of Barcelona from 1164 until his death. The eldest son of Count Ramon Berenguer IV of Barcelona and Queen Petronilla of Aragon, he was the first King of Aragon who was also Count of Barcelona. He was also Count of Provence, which he conquered from Douce II, from 1166 until 1173, when he ceded it to his brother, Ramon Berenguer III. His reign has been characterised by nationalistic and nostalgic Catalan historians, as "l'engrandiment occitanic" or "the Pyrenean unity": a great scheme to unite various lands on both sides of the Pyrenees under the rule of the House of Barcelona. - 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. - Brunei, officially the Nation of Brunei, the Abode of Peace (Jawi: ), is a sovereign state located on the north coast of the island of Borneo in Southeast Asia. Apart from its coastline with the South China Sea, the country is completely surrounded by the state of Sarawak, Malaysia. It is separated into two parts by the Sarawak district of Limbang. Brunei is the only sovereign state completely on the island of Borneo; the remainder of the island's territory is divided between the nations of Malaysia and Indonesia. Brunei's population was 408,786 in July 2012. Given the information above, choose from the list below the object entity that exhibits the relation 'mother' with the subject 'dulce of aragon'. Choices: - asia - maud of savoy - petronilla of aragon
Answer:
petronilla of aragon