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.

[EX Q]: Question: How many gunboats did the Confederate States Navy have? Passage:The opening phase of what came to be called the Burnside Expedition, the Battle of Roanoke Island was an amphibious operation of the American Civil War, fought on February 7–8, 1862, in the North Carolina Sounds a short distance south of the Virginia border. The attacking force consisted of a flotilla of gunboats of the Union Navy drawn from the North Atlantic Blockading Squadron, commanded by Flag Officer Louis M. Goldsborough, a separate group of gunboats under Union Army control, and an army division led by Brig. Gen. Ambrose Burnside. The defenders were a group of gunboats from the Confederate States Navy, termed the Mosquito Fleet, under Capt. William F. Lynch, and about 2,000 Confederate soldiers commanded locally by Brig. Gen. Henry A. Wise. The defense was augmented by four forts facing on the water approaches to Roanoke Island, and two outlying batteries. At the time of the battle, Wise was hospitalized, so leadership fell to his second in command, Col. Henry M. Shaw.

[EX A]: The defenders were a group of gunboats from the Confederate States Navy, termed the Mosquito Fleet, under Capt

[EX Q]: Question: How long had Central States Wrestling been in business the year Robertson won the NWA Central States Television Championship? Passage:Robertson moved to Central States Wrestling, where he won the majority of his titles. On October 22, 1981, he won the NWA Central States Television Championship with a victory over Gene Lewis. He lost the belt to Oliver Humperdink later that year but soon regained it in a rematch. On February 18, 1982, however, he dropped the belt back to Lewis. This allowed Robertson to focus on the NWA Central States Tag Team Championship, which he won a total of five times. His first reign came in October 1981 when he teamed with Rufus R. Jones to defeat Buzz Tyler and James J. Dillon. His next reign came in March 1982 when he teamed with Steve Regal to win the belts from Roger Kirby and Jerry Valiant. The title changed hands twice more that month, as Kirby and Valiant quickly regained the title only to drop it back to Robertson and Regal. Two months later, Kirby and Valiant won the belts back again. Robertson found a new partner, however, and won the championship by teaming with Hercules Hernandez in August. The reign lasted less than a month, but Robertson and Hernandez held the belts one final time after another victory in September 1982. The following year, Robertson's main success came as a singles wrestler. On February 10, 1983, he won the NWA Central States Heavyweight Championship with a victory over Manny Fernandez. He lost the belt to Bob Brown two months later but regained it in a rematch the following week. Robertson's final title reign ended when he dropped the title to Race on June 2, 1983.

[EX A]: On October 22, 1981, he won the NWA Central States Television Championship with a victory over Gene Lewis

[EX Q]: Question: Is the University of Mumbai larger than the first school Easwaran did his post-doctoral research at? Passage:Kalpathy Easwaran, born on 7 July 1939 in the South Indian state of Kerala in a brahmin family, graduated in science from Government Victoria College, Palakkad and secured his master's degree (MSc) from the University of Mumbai in 1962 to pursue his doctoral studies at the department of physics of the Indian Institute of Science, which he obtained in 1967. His post-doctoral research was at Tata Institute of Fundamental Research during 1966–67 and later at the University of Washington after which he spent a year at Jožef Stefan Institute as a visiting scientist. Returning to India in 1970, he resumed his career at the Indian Institute of Science, holding such positions as Astra Chair professorship (1994–97), Chair of the department of molecular biophysics (until 2006) and as Indian National Science Academy Senior Scientist (2006–07) until his superannuation in 2007. In between, he served as a visiting faculty at institutions such as Harvard Medical School, University of Connecticut, Georgetown University, United States Naval Research Laboratory and National University of Singapore. Post retirement, he is involved with ABL Biotechnologies, a Chennai-based biotechnology institution.

[EX A]:
His post-doctoral research was at Tata Institute of Fundamental Research during 1966–67 and later at the University of Washington after which he spent a year at Jožef Stefan Institute as a visiting scientist