In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.

Q: Passage: In 1479, the Lord of Béarn, Francis Phoebus, inherited the Kingdom of Navarre, across the Pyrenees to the southwest. The two sovereign principalities remained in personal union until their extinction. Béarn went on to be ruled by Henry II of Navarre, who inherited it from his mother. In 1512, the Kingdom of Navarre was almost entirely occupied by Spain; only Lower Navarre, north of the Pyrenees escaped Spanish permanent occupation. The Bearnese monarchs extended the use of Occitan to Navarre after 1512, despite the fact that it was not the vernacular there, where Basque was the tongue of the people. The Estates of Navarre convoked in 1522 (or in 1523, according to other sources) kept records in Occitan, as did the Chancery of Navarre created in 1524. When Henry II revised the Fueros of Navarre in 1530, he had them translated from Castilian into Occitan.
 Link Information: Queen Eleanor succeeded him for only 15 days and died, leaving the crown to her grandson, Francis Phoebus Answer: Queen Eleanor 

A: Who did Francis Phoebus inherit the Kingdom of Navarre from?
****
Q: Passage: In 1809, Walter Coffin sunk the first coal pit in the Rhondda, further up the valley in Dinas, but a lack of a transportation network greatly affected the profitability of coal mining as an industry in the region. Coffin tackled this problem by constructing a one-mile tramline which connected his mines in Dinas to a tramline built by Dr. Richard Griffiths at Denia (Pontypridd), which linked to a private canal that joined onto the Glamorganshire Canal at Treforest. Coffins tramline followed the southern bank of the River Rhondda and ran through Porth. The existence of the tramline made the development of the Porth and Cymmer region far more attractive, and by the middle of the 19th century there was an impetus to expand coal mining in the area. In 1841 Richard Lewis joined Coffin in trying to exploit the region with his level built at Cymmer. This resulted in the construction of around fifty miners' cottages, several of which were located in Porth. In 1844 Lewis Edwards of Newport and George Gethin of Penygraig opened a small level at Nyth-bran on the eastern borders of Porth, the villages' first coal mine. This was followed in 1845 by the sinking of the Porth Colliery by David James of Merthyr, the success of which saw him build the Llwyncelyn Colliery in 1951, also in Porth. By 1850 the Taff Vale Railway had been extended to Cymmer replacing the tramline, allowing direct access between the lower Rhondda and the ports of Cardiff.
 Link Information: It was opened in stages in 1840 and 1841. Answer: 10

A: How long had the Taff Vale Railway been in existence the year it was extended to Cymmer?
****
Q: Passage: Thornbury was built between 1864 and 1865, when Frederick Mappin, the cutlery and steel magnate, commissioned the architects M.E. Hadfield and Son to design a new house for him. Mappin had previously been Master Cutler in 1855 and would go on to become Mayor of Sheffield in 1877/8 and a Liberal MP in 1880. Thornbury is a big bold stone house with curving two storey bay windows. It is in the Classical style with two wings, balustraded parapet and a steep pitched roof with tall chimneys and gables. The main entrance is at the western side of the building and this has a two storey porch and a large oriel window. The house which sits on six acres of land looks over mature gardens which were designed by Robert Marnock. The entrance is reached by a long sweeping drive off Fulwood Road; a small lodge is situated at the entrance to the drive.
 Link Information: Practising as an architect in Sheffield from 1834 Answer: 30

A:
How long had M.E. Hadfield and Son been a going concern for when Frederick Mappin hired them to build a new house?
****