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.

Let me give you an 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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The answer to this example can be: 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.
Here is why: The passage describes the 704th's actions during Operation Market Garden.

OK. solve this:
Question: Which city that Jackson competed in has the largest population? Passage:Jackson competed at the 2004 World MTB Orienteering Championships in Ballarat, where he won his first world championship gold medal by winning the sprint, ahead of Alain Berger from Switzerland. He won a bronze medal in the long distance, and a bronze medal with the Australian relay team. At the 2005 World Championships in Banska Bystrica he won a bronze medal in the long distance, placed eighth in the middle distance, and seventh with the Australian relay team. At the 2006 Championships in Joensuu he placed sixth in the long distance and seventh in the middle distance. At the Oceania MTB Orienteering Championships in Victoria, Australia in 2007 he won gold medals in both the sprint, the middle distance and the long distance. At the 2008 World MTB Orienteering Championships in Ostróda, he won a gold medal in the middle distance, placed sixth in the sprint, placed sixth in the long distance, and eleventh in the relay. In Ben Shemen in 2009 he became world champion in both the sprint, ahead of Lasse Brun Pedersen, and in the long distance, ahead of Ruslan Gritsan, and placed fifth in the middle distance. At the 2010 World Championships in Montalegre he won a gold medal in the sprint, ahead of Tõnis Erm, a silver medal in the middle distance behind Samuli Saarela, and a silver medal in the long distance behind Anton Foliforov.

Answer:
Jackson competed at the 2004 World MTB Orienteering Championships in Ballarat, where he won his first world championship gold medal by winning the sprint, ahead of Alain Berger from Switzerland