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: What was the population of Holyhead the year that R. S. Thomas moved there? Passage 1:Matthew P. A. Fisher is an American theoretical physicist and Professor of Physics at the University of California, Santa Barbara, and is known for several major contributions to condensed matter physics. He completed his bachelor's degree in engineering physics from Cornell University in 1981 and earned a Ph.D. in theoretical physics from the University of Illinois at Urbana-Champaign in 1986 with Anthony Leggett as his advisor, with part of his work done under the supervision of Eduardo Fradkin. He was awarded the Alan T. Waterman Award in 1995, and in 2015 he was a recipient of the Oliver E. Buckley Condensed Matter Prize for his work on the superconductor-insulator transition. He was elected to the American Academy of Arts and Sciences in 2003 and to the National Academy of Sciences in 2012. He is a Fellow of the American Physical Society. He is the son of English physicist Michael E. Fisher, and brother of American physicist Daniel S. Fisher.
 Passage 2:R. S. Thomas was born in Cardiff, the only child of Thomas Hubert and Margaret (née Davies). The family moved to Holyhead in 1918 because of his father's work in the Merchant Navy. He was awarded a bursary in 1932 to study at the University College of North Wales, where he read Latin. In 1936, after he completed his theological training at St. Michael's College, Llandaff, he was ordained as a priest in the Anglican Church in Wales. From 1936 to 1940 he was the curate of Chirk, Denbighshire, where he met his future wife, Mildred "Elsi" Eldridge, an English artist. He subsequently became curate-in charge of Tallarn Green, Flintshire, as part of his duties as curate of Hanmer.
 Passage 3:A number of solar system objects that are mostly to completely invisible to the human eye are reasonably detectable with medium-size binoculars, including larger craters on the Moon; the dim outer planets Uranus and Neptune; the inner "minor planets" Ceres, Vesta and Pallas; Saturn's largest moon Titan; and the Galilean moons of Jupiter. Although visible unaided in pollution-free skies, Uranus and Vesta require binoculars for easy detection. 10×50 binoculars are limited to an apparent magnitude of +9.5 to +11 depending on sky conditions and observer experience. Asteroids like Interamnia, Davida, Europa and, unless under exceptional conditions Hygiea, are too faint to be seen with commonly sold binoculars. Likewise too faint to be seen with most binoculars are the planetary moons except the Galileans and Titan, and the dwarf planets Pluto and Eris. Other difficult binocular targets include the phases of Venus and the rings of Saturn. Only binoculars with very high magnification, 20x or higher, are capable of discerning Saturn's rings to a recognizable extent. High-power binoculars can sometimes show one or two cloud belts on the disk of Jupiter if optics and observing conditions are sufficiently good.

Output:
2