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.
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-Lô 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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Example solution: 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.
Example explanation: The passage describes the 704th's actions during Operation Market Garden.

Problem: Question: How many races did Hornish participate in during his first full time year? Passage:Hornish moved to Penske's NASCAR program part-time in the Xfinity Series (then known as the Busch Series) during the 2006 season, and began driving part-time in the Sprint Cup Series (then known as the Nextel Cup Series) in 2007. He raced full-time in the Sprint Cup Series the following year, struggling at first, with eight top-ten finishes over his first three seasons and a top points placing of 28th (in 2009). Hornish returned part-time to the Xfinity Series (then known as the Nationwide Series) in 2011, winning one race. He drove full-time in the series the following year, finishing fourth in points. In 2012 Hornish replaced A. J. Allmendinger (suspended by NASCAR for failing a drug test) in Penske's No. 22 car midway through the season, earning one top-five finish. The following year he returned to the Nationwide Series, winning one race and earning 16 top-five and 24 top-ten finishes to place second in points (three behind series champion Austin Dillon). Hornish drove part-time for Joe Gibbs Racing in an eight-race 2014 season, with one win and four top-five finishes. He returned to the Cup Series in 2015 with Richard Petty Motorsports, scoring three top-tens and finishing 26th in points. He returned part-time to the Xfinity Series in 2016, winning a race for JGR and finishing sixth or better in all three races he entered for Richard Childress Racing. In 2017, he returned to Penske's Xfinity program for a three-race schedule in the No. 22.


Solution: He raced full-time in the Sprint Cup Series the following year, struggling at first, with eight top-ten finishes over his first three seasons and a top points placing of 28th (in 2009)