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.
--------
Question: Passage: American rapper Tyga has released seven studio albums, three compilation albums, nineteen mixtapes, seventy-four singles (including thirty-four as a featured artist) and forty-six music videos. In 2008, Tyga released his first studio album, No Introduction, on the record label Decaydance Records. The album featured the single "Coconut Juice", which features singer Travie McCoy; the song peaked at number 94 on the US Billboard Hot 100, becoming Tyga's first song to appear on the chart. In 2010, Tyga and American singer Chris Brown released the collaborative mixtape Fan of a Fan, which included the single "Deuces": the song peaked at number 14 on the Billboard Hot 100 and became Tyga's first song to chart on the US Hot R&B/Hip-Hop Songs chart, peaking at number one. Tyga also appeared on the song "Loyalty", a single by fellow rapper Birdman, and collaborated with rapper Lil Wayne on the non-album single "I'm on It", both of which failed to chart on the Billboard Hot 100.
 Link Information: none Answer: none

Answer: How many copies did the song featuring Travie McCoy sell?


Question: Passage: The keel for Wacht was laid down in August 1886 at the AG Weser shipyard in Bremen. She was launched on 27 August 1887 and Vizeadmiral (Vice Admiral) Alexander von Monts, the chief of the Marinestation der Nordsee (North Sea Naval Station) christened the ship. In early 1888, she was transferred to Wilhelmshaven, where her armament was installed, and she was commissioned on 9 August to begin sea trials. These concluded on 13 December in Wilhelmshaven. She was temporarily assigned to the newly-created Reserve Division of the North Sea over the winter of 1888–1889 before being transferred to Kiel on 1 May to begin engine trials, after which she was assigned to the Maneuver Squadron. During training exercises with the squadron, Wacht suffered a burst boiler tube on 20 June that forced her to return to port for repairs. In early August, she joined the squadron for a visit to Britain, arriving back in Wilhelmshaven on 31 August. The fleet then conducted its annual large-scale maneuvers. After the maneuvers ended in September, Korvettenkapitän (KK—Corvette Captain) Friedrich von Baudissin took command of the vessel. 
 Link Information: Bremen is a major cultural and economic hub of Northern Germany. Answer: Germany

Answer: In what country was the keel for the Wacht laid down?


Question: Passage: Born on 25 June 1884 in South Kensington, England, the eldest child of Henry Neville Custance and Alice Georgina, née Custance. His grandfather was Admiral Sir Reginald Custance. He joined the Royal Navy on 15 January 1899 as a cadet. He was rated midshipman on 15 May 1900 and served aboard HMS Ocean. Promoted to sub-lieutenant on 15 July 1903 he served aboard HMS Foam in the Mediterranean Station between 1904–1905. He served upon HMS Venerable in 1905 and promoted to lieutenant on 15 January 1905. He was the Gunnery Officer aboard HMS Vanguard between 1913–1917, and was having dinner aboard another ship at Scapa Flow in 1917 when HMS Vanguard suffered an internal explosion and sank with the loss of lives of 843 men. He served aboard HMS Vanguard during World War I and was present during the battle of Jutland in 1916.
 Link Information: Admiral Sir Reginald Neville Custance, (20 September 1847 – 30 August 1935) was a Royal Navy officer. He was the eldest son of General William Neville Custance CB. Answer: William Neville Custance

Answer:
What was the name of Wilfred's paternal great grandfather?