Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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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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.
Reason: The passage describes the 704th's actions during Operation Market Garden.

Now, solve this instance: Question: Who was the mayor of Vancouver when filming started in Canada? Passage:Chris Columbus was hired by 20th Century Fox to write and direct the film in 1995. In 1997, Peter Segal was attached to a script which had been written by Columbus and Michael France. Segal later left the project in the same year. Phillip Morton worked on the script, and Sam Hamm did rewrites in 1998. The following year, Raja Gosnell signed on as director. The film was announced in August 2000 as being aimed for a July 4, 2001 release date. Gosnell decided to leave the project to film Scooby-Doo. Peyton Reed served as replacement in April 2001. Reed contemplated making the film as a period piece set in the early 1960s during the space race. He later dropped out from the film. In April 2004, Tim Story was hired to direct and principal photography began in August in Vancouver, British Columbia, Canada with re-shoots carried on until May 2005. Starring Ioan Gruffudd, Jessica Alba, Chris Evans, Michael Chiklis and Julian McMahon, the film was released on July 8, 2005.

Student:
In April 2004, Tim Story was hired to direct and principal photography began in August in Vancouver, British Columbia, Canada with re-shoots carried on until May 2005