Q: 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: Of the three Lehigh River tributaries that drain into the Delaware River, which is the longest? Passage 1:According to the United States Census Bureau, the township has a total area of , of which is land and , or 0.08%, is water. Geophysically, it is located within the great bend or kink of the lower Lehigh River mouth region due north of the cities of Allentown, NNW of Bethlehem and due west of Easton, Pennsylvania (on the mouth of the Lehigh). Moore Twp. contains one riverine drainage divide such that to the west it is drained into the Delaware River via historic Catasauqua Creek, Monocacy and especially Hokendauqua creeks, all of which originate in the township and are tributaries of the Lehigh River, and by the south and east draining Bushkill Creek tributary of the Delaware River (upper right corner of map above and right). Its landscapes compose the foothills south of its natural northern boundary — the over long Blue Mountain barrier ridge.
 Passage 2:The second largest February tornado outbreak on record impacted the Gulf Coast and East Coast regions of the United States beginning on February 23. The first significant tornadoes of the outbreak moved across southeastern Louisiana and southern Mississippi that evening, leaving significant damage and three deaths. The towns of Livingston and Laplace, Louisiana sustained heavy damage from strong EF2 tornadoes, and another EF2 near Purvis, Mississippi killed one person in a mobile home. An EF3 tornado also caused major structural damage in Paincourtville, Louisiana before destroying an RV park in Convent, killing two people at that location. Three simultaneous waterspouts were observed over Lake Pontchartrain during the event as well. Later that night, a large supercell thunderstorm developed over the Gulf of Mexico and moved ashore, producing a destructive EF3 tornado in Pensacola, Florida. The tornado injured three people and destroyed homes, townhouses, apartments, and a GE warehouse.
 Passage 3:The history of CBS in East Texas traces back to the sign-on of the market's first television station, KTVE (channel 32) in 1953; that station shut down due to financial problems in 1955. After KLTV (channel 7) signed on in October 1954, it carried select CBS programming as part of a shared primary affiliation with ABC and NBC (eventually becoming a full-time ABC affiliate in 1984). CBS would not have a full-time affiliate in the Tyler-Longview market until September 1984, when KLMG-TV (channel 51, now KFXK-TV) signed on the air from Longview; KLMG disaffiliated from the network in April 1991 to become the market's Fox affiliate. For the thirteen years that followed, viewers in the portion of East Texas that KFXK-TV served had to rely on cable or satellite for CBS programming. Most area cable providers imported Shreveport–Texarkana affiliate KSLA, while some cable systems in the western portion of the market carried the network's Dallas–Fort Worth affiliates (KDFW was carried from 1991 until it switched to Fox in July 1995 while affiliate-turned-O&O KTVT was then carried from that point until early 2004); cable systems in Houston County carried KBTX-TV instead.

A:
1