Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.

Passage: The two most prominent Norman families to arrive in the Mediterranean were descendants of Tancred of Hauteville and the Drengot family, of whom Rainulf Drengot received the county of Aversa, the first Norman toehold in the south, from Duke Sergius IV of Naples in 1030. The Hauteville family achieved princely rank by proclaiming prince Guaimar IV of Salerno 'Duke of Apulia and Calabria'. He promptly awarded their elected leader, William Iron Arm, with the title of count in his capital of Melfi. The Drengot family thereafter attained the principality of Capua, and emperor Henry III legally ennobled the Hauteville leader, Drogo, as 'dux et magister Italiae comesque Normannorum totius Apuliae et Calabriae' ('Duke and Master of Italy and Count of the Normans of all Apulia and Calabria') in 1047. Question: Who was Count of Melfi
William Iron Arm

Passage: The programme's first serial, An Unearthly Child, shows that the Doctor has a granddaughter, Susan Foreman. In the 1967 serial, Tomb of the Cybermen, when Victoria Waterfield doubts the Doctor can remember his family because of, 'being so ancient', the Doctor says that he can when he really wants to—'The rest of the time they sleep in my mind'. The 2005 series reveals that the Ninth Doctor thought he was the last surviving Time Lord, and that his home planet had been destroyed; in 'The Empty Child' (2005), Dr. Constantine states that, 'Before the war even began, I was a father and a grandfather. Now I am neither.' The Doctor remarks in response, 'Yeah, I know the feeling.' In 'Smith and Jones' (2007), when asked if he had a brother, he replied, 'No, not any more.' In both 'Fear Her' (2006) and 'The Doctor's Daughter' (2008), he states that he had, in the past, been a father. Question: In 2005, what did Doctor Who think the condition of his home planet was?
destroyed

Passage: In Tibetan Buddhism the teachers of Dharma in Tibet are most commonly called a Lama. A Lama who has through phowa and siddhi consciously determined to be reborn, often many times, in order to continue their Bodhisattva vow is called a Tulku. Question: What helped the Lama determine to be reborn?
phowa and siddhi