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.
One example: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lo during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
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Solution is here: During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen.
Explanation: The passage describes the 704th's actions during Operation Market Garden.

Now, solve this: Question: How long had the band Gary joined in 1964 been in existence when he did join it? Passage:Gary Pickford-Hopkins began his musical career at the age of 16 with a local Neath group called The Smokestacks in 1964. He soon joined Eyes Of Blue, who in 1966 won the Melody Maker's Battle of the Bands, they have recorded two albums, John Weathers was on drums and he would later follow Pickford-Hopkins to Wild Turkey and then join Gentle Giant. In 1970, he briefly joined Big Sleep, and a year later he went to play with Glenn Cornick's Wild Turkey which recorded three albums from 1971 to June 1974, when he joined Rick Wakeman's English Rock Ensemble to produce the live album Journey to the Centre of the Earth in 1974 which reached number one on the UK Albums Chart and peaked at number 3 on the Billboard 200 in the United States. It was certified gold in the United States and United Kingdom. He later sang on Wakeman's third solo album The Myths and Legends of King Arthur and the Knights of the Round Table. In 1976, he sang on an album from a band called The Good Times Roll Band with The Faces' bass player Tetsu Yamauchi, the album simply titled Tetsu & The Good Times Roll Band was recorded in 1976 but was published in 2009.

Solution:
He soon joined Eyes Of Blue, who in 1966 won the Melody Maker's Battle of the Bands, they have recorded two albums, John Weathers was on drums and he would later follow Pickford-Hopkins to Wild Turkey and then join Gentle Giant