 <translate> Give some stream of consciousness and then the answer. Special districts (also known as special service districts, special district governments, limited purpose entities, or special-purpose districts in the United States) are independent, special-purpose governmental units that exist separately from local governments such as county, municipal, and township governments, with substantial administrative and fiscal independence. They are formed to perform a single function or a set of related functions. The term special district governments as defined by the U.S. Census Bureau excludes school districts. In 2007, the U.S. had more than 39,000 special district governments.

Answer this question: local governments that provide a single service or a closely related set of services are? <yor> Fi ìmọ̀lára rẹ hàn, kó o sì wá dáhùn ìbéèrè náà. Awọn agbegbe pataki (ti a tun mọ ni awọn agbegbe iṣẹ pataki, awọn ijọba agbegbe pataki, awọn ile-iṣẹ idiwọn, tabi awọn agbegbe idi pataki ni Amẹrika) jẹ ominira, awọn ẹya ijọba idi pataki ti o wa lọtọ lati awọn ijọba agbegbe bii agbegbe, ilu, ati awọn ijọba ilu, pẹlu ominira iṣakoso ati ominira owo. Wọ́n máa ń ṣe iṣẹ́ kan ṣoṣo tàbí kí wọ́n ṣe àwọn iṣẹ́ míì tó jọra. Ọ̀rọ̀ náà ìjọba àgbègbè àkànṣe gẹ́gẹ́ bí Àjọ Ìkànìyàn ti Orílẹ̀-èdè Amẹ́ríkà ṣe ṣàlàyé rẹ̀ kò ní àwọn àgbègbè ilé ìwé nínú. Lọ́dún 2007, àwọn ìjọba àgbègbè àkànṣe tó wà lórílẹ̀-èdè Amẹ́ríkà ju ẹgbẹ̀rún mọ́kàndínlógójì [39,000] lọ.  Dáhùn ìbéèrè yìí: ṣé ìjọba àdúgbò tó ń pèsè iṣẹ́ kan ṣoṣo tàbí èyí tó ní í ṣe pẹ̀lú ọ̀pọ̀lọpọ̀ àwọn iṣẹ́ kan ni wọ́n? 