Problem: Please answer a question about the following article about Tucson, Arizona:
Tucson was probably first visited by Paleo-Indians, known to have been in southern Arizona about 12,000 years ago. Recent archaeological excavations near the Santa Cruz River have located a village site dating from 2100 BC.[citation needed] The floodplain of the Santa Cruz River was extensively farmed during the Early Agricultural period, circa 1200 BC to AD 150. These people constructed irrigation canals and grew corn, beans, and other crops while gathering wild plants and hunting. The Early Ceramic period occupation of Tucson saw the first extensive use of pottery vessels for cooking and storage. The groups designated as the Hohokam lived in the area from AD 600 to 1450 and are known for their vast irrigation canal systems and their red-on-brown pottery.[citation needed]
How long ago were Paleo-Indians known to be in the Tucson area?
A: about 12,000 years ago
Problem: Please answer a question about the following article about Jehovah%27s Witnesses:
Each congregation has a body of appointed unpaid male elders and ministerial servants. Elders maintain general responsibility for congregational governance, setting meeting times, selecting speakers and conducting meetings, directing the public preaching work, and creating "judicial committees" to investigate and decide disciplinary action for cases involving sexual misconduct or doctrinal breaches. New elders are appointed by a traveling overseer after recommendation by the existing body of elders. Ministerial servantsappointed in a similar manner to eldersfulfill clerical and attendant duties, but may also teach and conduct meetings. Witnesses do not use elder as a title to signify a formal clergy-laity division, though elders may employ ecclesiastical privilege such as confession of sins.
Who appoints new elders?
A: a traveling overseer
Problem: Please answer a question about the following article about Indigenous peoples of the Americas:
According to the 2002 Census, 4.6% of the Chilean population, including the Rapanui (a Polynesian people) of Easter Island, was indigenous, although most show varying degrees of mixed heritage. Many are descendants of the Mapuche, and live in Santiago, Araucania and the lake district. The Mapuche successfully fought off defeat in the first 300350 years of Spanish rule during the Arauco War. Relations with the new Chilean Republic were good until the Chilean state decided to occupy their lands. During the Occupation of Araucania the Mapuche surrendered to the country's army in the 1880s. Their land was opened to settlement by Chileans and Europeans. Conflict over Mapuche land rights continues to the present.
What percent of the Chilean population were indigenous according to the 2002 census?
A: 4.6%
Problem: Please answer a question about the following article about Brain:
The invention of electronic computers in the 1940s, along with the development of mathematical information theory, led to a realization that brains can potentially be understood as information processing systems. This concept formed the basis of the field of cybernetics, and eventually gave rise to the field now known as computational neuroscience. The earliest attempts at cybernetics were somewhat crude in that they treated the brain as essentially a digital computer in disguise, as for example in John von Neumann's 1958 book, The Computer and the Brain. Over the years, though, accumulating information about the electrical responses of brain cells recorded from behaving animals has steadily moved theoretical concepts in the direction of increasing realism.
Computers were invented in what decade in history?
A:
1940s