paragraph_text: The flows through the central portion of the island of Iriomote in the Yaeyama District in Okinawa Prefecture, Japan. It is the longest river in Okinawa.

paragraph_text: Newcastle is a town in Lincoln County, Maine, United States. The population was 1,752 at the 2010 census. The village of Newcastle is located in the eastern part of the town, on the Damariscotta River. Together with the village of Damariscotta linked by the Main Street bridge, they form the Twin Villages (see Damariscotta-Newcastle CDP).

paragraph_text: County-level divisions are the third level of administration of the People's Republic of China and include counties, autonomous counties, banners, autonomous banners, county-level cities and districts. Most county-level divisions are administered as part of prefecture-level divisions, but some are administered directly by province-level divisions.

paragraph_text: The 3rd Okinawa International Movie Festival was held from March 18 to March 27, 2011 and took place at the Okinawa Convention Center in Ginowan City and Sakurazaka Theater in Naha, owned and run by Japanese director Yuji Nakae.

paragraph_text: The is the legislature of Osaka Prefecture. As in all prefectures, it is elected to four-year terms by single non-transferable vote in multi- and single-member districts and is responsible for enacting and amending prefectural by-laws, approving the budget and important administrative appointments in the prefectural government, including the prefecture's vice governors. The assembly has a regular membership 88 members.

paragraph_text: "Respect the Power of Love" is Namie Amuro's 12th single on the Avex Trax label. Her second single to be released after her hiatus. The single was released on the same day that Amuro's mother was murdered. Amuro cancelled promotion for this single and flew to Okinawa to identify her mother's body.

paragraph_text: The is one of five active Armies of the Japan Ground Self-Defense Force. It is headquartered in Kumamoto, Kumamoto Prefecture. Its responsibility is the defense of Kyūshū and Okinawa.

paragraph_text: Twin Branch is an unincorporated community in McDowell County, West Virginia, United States. Twin Branch is west-southwest of Davy. It was founded by Henry Ford as a mining community.

paragraph_text: Fengyang County () is a county in north-central Anhui Province, China. It is under the administration of Chuzhou, a prefecture-level city.

paragraph_text: Zhenping County () is a county in the southwest of Henan province, China. It is under the administration of the prefecture-level city of Nanyang.

paragraph_text: The (or 先島群島, "Sakishima-guntō") (Okinawan: "Sachishima", Miyako: "Saksїzїma", Yaeyama: "Sakїzїma", Yonaguni: "Satichima") are an archipelago located at the southernmost end of the Japanese Archipelago. They are part of the Ryukyu Islands and include the Miyako Islands and the Yaeyama Islands. The islands are administered as part of Okinawa Prefecture, Japan.

paragraph_text: East Lake is one of the twin lakes that occupy part of the Newberry Crater or caldera in Central Oregon, United States. It is located in the Deschutes National Forest near the city of La Pine. The caldera was formed over 500,000 years ago from volcanic eruptions. East Lake's water comes from snow melt, rain fall, and hot springs only. The average depth is , at the deepest point, and covers . East Lake is about higher in elevation and is to the east of its twin, Paulina Lake.

paragraph_text: Twin Brooks is a town in Grant County, South Dakota, United States. The population was 69 at the 2010 census.

paragraph_text: Twin, also known as Yampertown, is a town in Marion County, Alabama, United States. It is about equidistant from Brilliant, Guin and Winfield. It incorporated on August 6, 2002, becoming the 10th incorporated community in Marion County. It had a population of 399 as of the 2010 U.S. Census.

paragraph_text: Rong'an County (; Standard Zhuang: ) is under the administration of Liuzhou, Guangxi Zhuang Autonomous Region, China. It borders the prefecture-level city of Guilin to the east.

paragraph_text: The United States Oath of Allegiance, officially referred to as the ``Oath of Allegiance, ''8 C.F.R. Part 337 (2008), is an allegiance oath that must be taken by all immigrants who wish to become United States citizens.

paragraph_text: Ryukyukoku Matsuri Daiko Hawaii (琉球國祭り太鼓ハワイ支部) is a chapter of the Okinawan Eisā taiko ensemble Ryukyukoku Matsuri Daiko. Often called RMD Hawaii for short, the chapter has branches on Oahu, Kauai, Maui and the Big Island of Hawaii in Kohala and Waimea. The headquarters for the Hawaii chapter is on Oahu.

paragraph_text: The Kingdom of Hawai ʻi was sovereign from 1810 until 1893 when the monarchy was overthrown by resident American and European capitalists and landholders. Hawaii was an independent republic from 1894 until August 12, 1898, when it officially became a territory of the United States. Hawaii was admitted as a U.S. state on August 21, 1959.

paragraph_text: The Speaker of the House is the presiding officer of the United States House of Representatives. The office was established in 1789 by Article I, Section 2 of the United States Constitution. The Speaker is the political and parliamentary leader of the House of Representatives, and is simultaneously the House's presiding officer, leader of the body's majority party, and the institution's administrative head. Speakers also perform various other administrative and procedural functions. Given these several roles and responsibilities, the Speaker usually does not personally preside over debates. That duty is instead delegated to members of the House from the majority party. Neither does the Speaker regularly participate in floor debates or vote.

paragraph_text: The Federal Rules of Civil Procedure (officially abbreviated Fed. R. Civ. P.; colloquially FRCP) govern civil procedure (i.e. for civil lawsuits) in United States district (federal) courts. The FRCP are promulgated by the United States Supreme Court pursuant to the Rules Enabling Act, and then the United States Congress has seven months to veto the rules promulgated or they become part of the FRCP. The Court's modifications to the rules are usually based upon recommendations from the Judicial Conference of the United States, the federal judiciary's internal policy - making body. Although federal courts are required to apply the substantive law of the states as rules of decision in cases where state law is in question, the federal courts almost always use the FRCP as their rules of procedure. (States may determine their own rules, which apply in state courts, although most states have adopted rules that are based on the FRCP.)

Question: When did the twin of Okinawa Prefecture become part of the United States?
Answer: August 12, 1898