In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

[Q]: Question: What was the name of Stephen's paternal grandfather? Passage:Stephen Tvrtko I (, / ; 1338 10 March 1391) was the first King of Bosnia. A member of the House of Kotromanic, he succeeded his uncle Stephen II as Ban of Bosnia in 1353. As he was a minor at the time, Tvrtko's father, Vladislav, briefly ruled as regent, followed by Tvrtko's mother, Jelena. Early in his personal rule, Tvrtko quarreled with his country's Roman Catholic clergy, but later enjoyed cordial relations with all the religious communities in his realm. After initial difficulties the loss of large parts of Bosnia to his overlord, King Louis I of Hungary, and being briefly deposed by his magnates Tvrtko's power grew considerably. He conquered some remnants of the neighbouring Serbian Empire in 1373, after the death of its last ruler and his distant relative, Uros the Weak. In 1377, he had himself crowned King of Bosnia and of Serbia, claiming to be the heir of Serbia's extinct Nemanjic dynasty.

[A]: As he was a minor at the time, Tvrtko's father, Vladislav, briefly ruled as regent, followed by Tvrtko's mother, Jelena

[Q]: Question: Who was the head coach for the Edmonton Oilers when the team joined the NHL? Passage:Matheson was born on April 7, 1949 in Winnipeg, Manitoba to Jack and Peggy Matheson. Matheson had an intention to follow the footsteps of his father, Jack, a long-time sports editor for the Winnipeg Tribune. He graduated from the University of Manitoba with a degree in political science, and while in school, worked a part-time night shift with the Tribune. He got his first job upon completing school with the Regina Leader-Post, but moved west to Edmonton, Alberta six months later. Upon moving to Edmonton, Matheson got a job with the Edmonton Journal in 1970. He initially covered local curling and university sports, but quickly switched to hockey, when, in 1973, Edmonton was granted a WHA franchise, the Edmonton Oilers. Matheson became the beat writer for the Oilers then, and continued when the Oilers joined the NHL in 1979. He spent countless hours covering the team and its five Stanley Cups, and completed more than 300 stories per winter. In addition to writing, Matheson also was a part of the CFRN radio broadcasting team that covered the Oilers. After 24 years, he completed his tenure as beat writer for the Oilers in 1997. He now continues to write for the Edmonton Journal covering the NHL and the Oilers.

[A]: Matheson became the beat writer for the Oilers then, and continued when the Oilers joined the NHL in 1979

[Q]: Question: Who was the first coach of the team Davide scored his first goal against? Passage:On 30 August 2011, Santon signed for English club Newcastle United on a five-year contract, for an undisclosed fee; according to Inter, Santon was sold for 4million. He made his Newcastle debut on 16 October 2011 as a second-half substitute against Tottenham Hotspur. He went on to make his first Premier League start for the club in December away against Norwich City, before making his full home debut the next week against Swansea City. He set up Papiss Cisse's first goal in the Magpies' shock win at Chelsea in the 19th minute. Halfway through the 201213 season, Santon was the only Newcastle player to have started every Premier League match. In the 32 win over Chelsea on 2 February 2013, he assisted the first goal with a cross for Jonas Gutierrez, and the winning goal scored by Moussa Sissoko. He scored his first goal for Newcastle on 17 March, an equaliser against Wigan Athletic.

[A]:
He scored his first goal for Newcastle on 17 March, an equaliser against Wigan Athletic