Given the task definition and input, reply with output. In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: How many Senators voted for the law that assigned Thebacon and all of its salts the control number 9737? Passage 1:Metroid: Other M received "generally favorable reviews", according to a review aggregator website Metacritic. GameSpot's Tom McShea praised the control scheme and combat system as "unique and responsive", and wrote that the search for secrets was "very rewarding". Craig Harris of IGN called the gameplay "a really impressive evolution of the old-school Metroid design", and GameTrailers described it as "a nice compromise between satisfying fans and opening up the series for a wider audience". In a review for an Australian television series Good Game, Stephanie Bendixsen enjoyed the game's atmosphere, while Steven O'Donnell remarked on how the developers "kept so simple, and yet it works so well." The writers from Famitsu also praised the game for the Sense Move technique and the switch between perspectives. The graphics were also well received. Christian Donlan of Eurogamer exclaimed that Other M bears graphical similarities to Metroid Prime which "tend to come across as nicely-built video game levels at best". Harris wrote that while the graphics are not being on par with the Prime series, it was still regarded as one of the best-looking games on the Wii. Tom Hoggins of The Daily Telegraph described the environments as "lush and detailed", and said they helped "capturing the ethos of old-school Metroid". Harris also praised the game's "storytelling with motion-captured acting and voice-over", and Wireds Chris Kohler applauded cutscenes "with slick graphic effects". The music was praised as atmospheric and faithful to the franchise, though McShea felt they were "more like outtakes from older entries than a moody new soundtrack".
Passage 2:The tercentenary was kicked off in Imperial Capital St. Petersburg on a rainy February morning. The event had been on everyones' lips for several weeks leading up the actual date, and dignitaries from the whole of the Empire had gathered in the capital's grand hotels: princes from the Baltic and Poland, high-priests from Armenia and Georgia in the Caucasus, and mullahs and tribal chiefs from Central Asia alongside the Khan of Khiva and the Emir of Bukhara. Additionally there was a large group of visitors from the provinces and workers, which left the usual well-dressed promenaders of the Winter Palace outnumbered. The city was bustling with these visitors, and Nevsky Prospect experienced the worst traffic jams in history, due to the converging of cars, carriages and trams. The streets themselves were decorated in the Imperial colors of blue, red and white, statues were dressed up with ribbons and garlands, and portraits of the line of Tsars going all the way back to the Romanov dynasty's founder Michael were hung up on the facades of banks and stores. Over tram lines were chains of light hung up, which spelled out 'God Save the Tsar' or portrayed the Romanov double-headed eagle with '16131913' spelled out underneath it. For many of the provincial visitors this was their first sight of electric light, and they stood in wonder of the 'columns, arcs and obelisks of light'.
Passage 3:Thebacon (INN; pronounced ), or dihydrocodeinone enol acetate, is a semisynthetic opioid that is similar to hydrocodone and is most commonly synthesised from thebaine. Thebacon is a derivative of acetyldihydrocodeine, where only the 67 double bond is saturated. Thebacon is marketed as its hydrochloride salt under the trade name Acedicon, and as its bitartrate under Diacodin and other trade names. The hydrochloride salt has a free base conversion ratio of 0.846. Other salts used in research and other settings include thebacon's phosphate, hydrobromide, citrate, hydroiodide, and sulfate. The US DEA Administrative Controlled Substance Control Number assigned by the Controlled Substances Act 1970 for thebacon and all of its salts is 9737.
3