Question: When did humans begin to live in Gregg Tafralis's city of birth?

full_context: Document 1: San Francisco: San Francisco was founded on June 29, 1776, when colonists from Spain established Presidio of San Francisco at the Golden Gate and Mission San Francisco de Asís a few miles away, all named for St. Francis of Assisi. The California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. San Francisco became a consolidated city - county in 1856. After three - quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama - Pacific International Exposition nine years later. In World War II, San Francisco was a major port of embarkation for service members shipping out to the Pacific Theater. It then became the birthplace of the United Nations in 1945. After the war, the confluence of returning servicemen, massive immigration, liberalizing attitudes, along with the rise of the ``hippie ''counterculture, the Sexual Revolution, the Peace Movement growing from opposition to United States involvement in the Vietnam War, and other factors led to the Summer of Love and the gay rights movement, cementing San Francisco as a center of liberal activism in the United States. Politically, the city votes strongly along liberal Democratic Party lines.
Document 2: Georgios Tsakanikas: Tsakanikas won a gold medal in the 1959 Mediterranean Games and a bronze medal in the 1959 Summer Universiade in shot out, he also represented Greece in the 1956, 1960 and 1964 Summer Olympic Games in shot put and in 1964 in discus throw. Tsakanikas also competed tor Greece in the Balkan Games winning four silver medals in shot put in 1955, 1957, 1959, 1960, 1961. The Balkan Games have now become a loose collection of Balkan Championships. Tsakanikas personal best in shot put is 18, 21 m. achieved on 26 December 1964 in Athens. He died in Athens, March 1, 2016.
Document 3: Stephanie Brown Trafton: Stephanie Brown Trafton (born December 1, 1979) is an American track and field athlete who won the discus throwing gold medal at the 2008 Summer Olympics in Beijing. She is thus one of only two American women to have ever won the event, and the only one since the Great Depression.
Document 4: Acjachemen: The Juaneño or Acjachemen are an indigenous people of California. They traditionally lived along the coast in what is now Orange and San Diego counties. The name ``Juaneño ''derives from the Spanish Mission San Juan Capistrano, founded to colonize the area in 1776. They traditionally spoke the Juaneño language, a variety closely related to the Luiseño language of the nearby Luiseño people, but this is extinct. In the 20th century, they organized as the Juaneño Band of Mission Indians, Acjachemen Nation, which is recognized by the State of California, but is not federally recognized.
Document 5: Suisun people: The Suisunes (also called the Suisun and the "People of the West Wind") were a tribe of Native Americans that lived in Northern California's Suisun Marsh regions of Solano County, California between what is now Suisun City, Vacaville and Putah Creek around 200 years ago. The Suisunes' main village, Yulyul, is believed to be where Rockville, California is located today. Father Abella, visitor to the tribe in 1811, indicated they resided in the present location of Fairfield, north of the Suisun Bay. One of the Suisunes' primary food sources was acorns. Their diet also included fish as well as miner's lettuce. Their huts (as recorded by the Spaniards in 1817) were conical wikiups made of rushes or tule thatch.
Document 6: Oklahoma: Evidence exists that native peoples traveled through Oklahoma as early as the last ice age. Ancestors of the Wichita and Caddo lived in what is now Oklahoma. The Panhandle culture peoples were precontact residents of the panhandle region. The westernmost center of the Mississippian culture was Spiro Mounds, in what is now Spiro, Oklahoma, which flourished between AD 850 and 1450. Spaniard Francisco Vásquez de Coronado traveled through the state in 1541, but French explorers claimed the area in the 1700s and it remained under French rule until 1803, when all the French territory west of the Mississippi River was purchased by the United States in the Louisiana Purchase.
Document 7: Namibia: Inline hockey was first played in 1995 and has also become more and more popular in the last years. The Women's inline hockey National Team participated in the 2008 FIRS World Championships. Namibia is the home for one of the toughest footraces in the world, the Namibian ultra marathon. The most famous athlete from Namibia is Frankie Fredericks, sprinter (100 and 200 m). He won four Olympic silver medals (1992, 1996) and also has medals from several World Athletics Championships. He is also known for humanitarian activities in Namibia and beyond.
Document 8: Greg Best: Gregory Alan "Greg" Best (born July 23, 1964 in Lynchburg, Virginia) is an equestrian competitor and coach in the sport of show jumping who won two silver medals for the United States in the 1988 Summer Olympic Games in Seoul, South Korea riding the famous Gem Twist. In 1992, Best suffered a fall that shattered his shoulder. After this, he moved to New Zealand, where he rode for the New Zealand League, winning the World Cup Series. He has also served as a New Zealand National Show Jumping Selector, a National Show Jumping Coach and a member of the New Zealand Show Jumping High Performance Committee. Best coached New Zealand's jumpers for the 2004 Summer Olympic Games in Athens. Between 1987 and 2003, Best also garnered 6 FEI World Cup wins. He now conducts coaching clinics in the United States, Canada and New Zealand. Along with Gem Twist, horses named Santos and Entrepreneur have been among his champion mounts.
Document 9: San Diego: San Diego has been called ``the birthplace of California ''. Historically home to the Kumeyaay people, it was the first site visited by Europeans on what is now the West Coast of the United States. Upon landing in San Diego Bay in 1542, Juan Rodríguez Cabrillo claimed the area for Spain, forming the basis for the settlement of Alta California 200 years later. The Presidio and Mission San Diego de Alcalá, founded in 1769, formed the first European settlement in what is now California. In 1821, San Diego became part of the newly independent Mexico, which reformed as the First Mexican Republic two years later. California became part of the United States in 1848 following the Mexican -- American War and was admitted to the union as a state in 1850.
Document 10: Jacksonville, Florida: The area of the modern city of Jacksonville has been inhabited for thousands of years. On Black Hammock Island in the national Timucuan Ecological and Historic Preserve, a University of North Florida team discovered some of the oldest remnants of pottery in the United States, dating to 2500 BC. In the 16th century, the beginning of the historical era, the region was inhabited by the Mocama, a coastal subgroup of the Timucua people. At the time of contact with Europeans, all Mocama villages in present-day Jacksonville were part of the powerful chiefdom known as the Saturiwa, centered around the mouth of the St. Johns River. One early map shows a village called Ossachite at the site of what is now downtown Jacksonville; this may be the earliest recorded name for that area.
Document 11: Georgios Stefanopoulos: Georgios Stefanopoulos (; born March 31, 1962 in Peristeri, Attiki) is a former boxer from Greece, who participated in two Summer Olympics for his native country in the men's heavyweight division (– 91 kg), starting in 1984 in Los Angeles, California. He twice won a medal at the European Championships in the early 1990s. Georgios also had some success in kickboxing, winning a gold medal in the Full-Contact heavyweight category at the W.A.K.O. European Championships 1986.
Document 12: History of San Francisco: The earliest evidence of human habitation in what is now the city of San Francisco dates to 3000 BC. Native Americans who settled in this region found the bay to be a resource for hunting and gathering, leading to the establishment of many small villages. Collectively, these early Native Americans are now known as the Ohlone, and the language they spoke belonged to the Miwok family. Their trade patterns included places as far away as Baja California, the Mojave Desert and Yosemite.
Document 13: Greg Bell (athlete): Greg Bell (born November 7, 1930 in Terre Haute, Indiana) is a former track and field athlete who won the Gold Medal in the Long Jump at the 1956 Summer Olympics in Melbourne, Australia.
Document 14: Gregg Tafralis: Gregg Tafralis ("Gregory Louis Tafralis;" born April 9, 1958 in San Francisco, California) is a former track and field athlete from the United States, who set the best world year performance in the men's shot put event in 1992. He competed for his native country at the 1988 Summer Olympics, finishing in ninth place.
Document 15: San Francisco: Upon independence from Spain in 1821, the area became part of Mexico. Under Mexican rule, the mission system gradually ended, and its lands became privatized. In 1835, Englishman William Richardson erected the first independent homestead, near a boat anchorage around what is today Portsmouth Square. Together with Alcalde Francisco de Haro, he laid out a street plan for the expanded settlement, and the town, named Yerba Buena, began to attract American settlers. Commodore John D. Sloat claimed California for the United States on July 7, 1846, during the Mexican–American War, and Captain John B. Montgomery arrived to claim Yerba Buena two days later. Yerba Buena was renamed San Francisco on January 30 of the next year, and Mexico officially ceded the territory to the United States at the end of the war. Despite its attractive location as a port and naval base, San Francisco was still a small settlement with inhospitable geography.
ground_truth: 3000 BC
sub_queries: What was Gregg Tafralis's city of birth? Answer: San Francisco
when did humans begin to live in San Francisco Answer: 3000 BC