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: How old was Cheney as of the 2012 Republican primary? Passage 1:From there it flows west through the Navajo Nation, turning northwest near Shiprock and its namesake monolith, crossing very briefly back into southwest Colorado (within half a mile (0.8 km) of the Four Corners quadripoint) before entering southeastern Utah. West of Bluff, Utah the river slices through the Comb Ridge and enters a series of rugged winding canyons, often over in depth. The lower of the San Juan River, in a remote portion of the Glen Canyon National Recreation Area, are flooded by Lake Powell, which is formed by Glen Canyon Dam on the Colorado River. The San Juan joins the Colorado in San Juan County, Utah at a point about to the north of Navajo Mountain and northeast of Page, Arizona.
 Passage 2:In 2002, it was proposed that a for-profit prison corporation, Cornell Corrections, build a prison on the island. To connect the island with Ketchikan, it was originally planned that the federal government spend $175 million on building a bridge to the island, and another $75 million to connect it to the power grid with an electrical intertie. The Ketchikan Borough Assembly turned the proposal down when the administration of Governor Tony Knowles also expressed its disfavor to the idea. Eventually, the corporation's prison plans led to the exposure of the wide-ranging Alaska political corruption probe, which eventually ensnared U.S. Senator Ted Stevens. The bridge idea persisted. The 2005 Highway Bill provided for $223m to build the Gravina Island Bridge between Gravina Island and nearby Ketchikan, on Revillagigedo Island. The provisions and earmarks were negotiated by Alaska's Rep. Don Young, who chaired the House Transportation Committee and were supported by the Chair of the Senate Appropriations Committee, Alaska's Senator Stevens. This bridge, nicknamed "The Bridge to Nowhere" by critics, was intended to replace the auto ferry which is currently the only connection between Ketchikan and its airport. While the federal earmark was withdrawn after meeting opposition from Oklahoma Senator Tom Coburn, though the state of Alaska received $300 million in transportation funding, the state of Alaska continued to study improvements in access to the airport, which could conceivably include improvements to the ferry service. Despite the demise of the bridge proposal, Governor Sarah Palin spent $26 million in transportation funding for the planned access road on the island that ultimately went nowhere.
 Passage 3:Before the 2012 Republican primary, Barron helped organize the "Draft Cheney 2012" movement, which was to convince the former vice president Cheney to seek the Republican presidential nomination in 2012. Early in the 2012 Republican primary process, Barron endorsed Herman Cain for the 2012 U.S. presidential election. After Cain dropped out, Barron endorsed Republican and later Libertarian Party presidential candidate Gary Johnson for the 2012 U.S. presidential election. He was a delegate to the 2012 Libertarian National Convention. In the 2012 Republican primary in the District of Columbia, Barron voted for Ron Paul. In October 2012, however, he announced he had decided to support and vote for Mitt Romney for President, even while continuing to serve as a D.C. elector for Johnson.

A:
3