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-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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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: Does Amtrak go into Canada? Passage:Everett Station is served by six daily Amtrak trains: four Cascades runs between Seattle and Vancouver, British Columbia, and two Empire Builder runs between Seattle and Chicago. The station is also served by the North Line of Sound Transit's Sounder commuter rail service, running four trains in peak direction towards King Street Station in Seattle during the morning commute and four trains from Seattle during the evening commute, only on weekdays and during special events. Train service to Everett is most often disrupted and canceled during the autumn and winter seasons because of landslides along the shoreline of the Puget Sound, where the BNSF mainline tracks run. During the 20122013 winter season, a record-high of 206 passenger trains between Everett and Seattle were canceled, prompting the Washington State Department of Transportation to begin a three-year landslide mitigation project in 2013 that will stabilize slopes above the railroad between Seattle and Everett.

Answer:
Everett Station is served by six daily Amtrak trains: four Cascades runs between Seattle and Vancouver, British Columbia, and two Empire Builder runs between Seattle and Chicago