You will be given a definition of a task first, then some input of the task.
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 years long was the period in which copper mineralization and pipe formation occurred? Passage 1:The copper ore deposits are those of a typical copper porphyry and associated alteration-mineralization. These altered zones include chalcopyrite, pyrite, bornite and molybdenite as hypogene minerals and chalcocite as a supergene mineral. The ore body surrounds the Braden Pipe in a continuous ring with a width of 2000 feet. The pipe is a geologic structure in the shape of an inverted cone, having a surface diameter of 4000 feet, and consisting of post-pipe breccia called the Braden Formation. The boundary of the pipe is marked by this post-pipe breccia and a pre-pipe breccia forming a belt up to 200 feet wide. "The Braden Pipe was a center of strong mineralization and structural weakness before the pipe was formed." Copper mineralization and pipe formation occurred in the Pliocene. Ore was originally mined from the Fortuna orebody at the southwest quadrant starting in 1906. Since 1922, the larger Teniente orebody has also been mined on the east side. "The best grade of ore is found in altered andesite or in andesitic flow breccia adjacent to the pre-pipe breccia."
 Passage 2:Lewis University's WLRA Radio was the first college radio station in the country to become digital. Lewis University received a $350,000 digital broadcasting project grant in the 1990s from philanthropy of The Andrew Corporation, a leading worldwide communications corporation. The studios, music archives, music scheduling system, audio storage and retrieval systems (including an AES/EBU Broadcast Electronics – Audiovault serial number 001 and 002), digital audio consoles, CD players & recorders, minidisc players and recorders, and DAT), ISDN digital phone system, ISDN and IP remote broadcast codecs, Optimod 8700 AES/EBU audio processing, AES/EBU broadcast delay, Harris Digit AES/EBU fm exciter, and transmitters were upgraded from analog to state of the art digital AES3 type I balanced and type II optical. The entire digital project was a joint venture with the Freberg Communications Corporation of Illinois, Harris Corporation of Florida, Pacific Research and Engineering of California, A-Ware Corporation (Musicmaster)  of Wisconsin, and Broadcast Electronics Corporation of Illinois. WLRA also added RDS Radio Data System to the FM transmission allowing information about the artist and song to be displayed on a radio tuned to 88.1-FM. Lewis University installed a new self standing radio tower and new digital IBOC or HD Radio ready ERI Rototiler  single bay fm antenna in 2000 adjacent to DeLaSalle Hall. WLRA increased the antenna height to HAAT and had to reduce the effective radiated power to 140 watts. WLRA moved from the basement of Fitzpatick Hall dormitory basement to new studios and broadcasting center in December 2005. The new broadcasting facility was named The Andrew Center of Electronic Media at Lewis University. The state of the art broadcasting studios and transmitters are located in DeLaSalle Hall on the Lewis University Romeoville campus. In 2005 WLRA began streaming a simulcast of the station over the Internet and in 2008 mobile media APPs for the Apple iPhone and iPod Touch. Simultaneously Apple added WLRA as one of their iTunes Radio Stations under College format. WLRA uses an AES3 Orban Opticodec audio processing/encoder for their 128kbs and 64kbs bit streams. In 2010, WLRA and Broadcast Electronics, Inc. integrated social media automation and Twitter with the newest generation of Broadcast Electronics AudioVault (FLEX) and Message Manager (TRE) RBDS data. The automation allow listeners to be notified of favorite artist being played through tagging. WLRA was the first station to have Broadcast Electronics integrate customer supplied computers, paving the way for other stations to upgrade into new generation Audiovault FLEX. In the Spring of 2012 WLRA was among the first 15 colleges selected to be part of Clear Channel Communication's iHeartRadio for both internet streaming and mobile media apps.
 Passage 3:In 1986, Mehboob met music composer Ismail Darbar who used to play the violin in film orchestras in those days. And it was Darbar who taught him the difference between poetry and film lyrics. Darbar introduced Mehboob to filmmaker Ram Gopal Varma and he began his song writing career with Varma's 1992 film Drohi whose music was composed by R. D. Burman. He then worked with A.R.Rahman on Varma's Rangeela. Rahman liked his work and introduced him to Mani Ratnam and Mehboob penned the lyrics for the Hindi (dubbed) version of Bombay. Mehboob went on to work with Rahman on films such as Thakshak, Doli Saja Ke Rakhna and Dubbed version of Dil Hi Dil Mein. He has also written the lyrics for Rahman's non-film album Maa Tujhe Salaam as well as Ratnam's Yuva.

Output:
1