Part 1. Definition
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.
Part 2. 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,
.
Answer: 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.
Part 3. Exercise
Question: Who was the commander of the Army of Tennessee during the Battle of Chickasaw Bayou? Passage:At the outbreak of the Civil War, Smith became a colonel of the 2nd California Volunteer Cavalry in the Union Army, rising early in 1862 to the rank of brigadier general in the United States Volunteers and to the chief command of the cavalry in the Department of the Missouri. From March through July, he served in the same capacity in the Department of the Mississippi. Assigned afterwards to the Army of the Tennessee, he took part in the Battle of Chickasaw Bayou and the capture of Arkansas Post. He commanded a division of the XIII Corps in the Vicksburg Campaign. Later, he led a division of the XVI Corps in the Red River Campaign of Maj. Gen. Nathaniel Banks. He received the brevet rank of colonel in the regular army for his services at the action of Pleasant Hill.

Answer:
Assigned afterwards to the Army of the Tennessee, he took part in the Battle of Chickasaw Bayou and the capture of Arkansas Post