First order theory

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First, First aid, First to file and first to invent, First Beeline, First Minister of Scotland, First London, First Minister and Deputy First Minister of Northern Ireland, First baseman, First Boston, First West Yorkshire, FIRST Robotics Competition, First Worcester, First Student, First Act, First lady, First contact, First Love, First family, First woman, First degree, First Fruits, First aid kit, B2 First, First Time, First impression, First Light, First Nations, First ladies of Pennsylvania, First American, Credit Suisse First Boston, First person, Who's on First?, First Fleet, First Line, First man or woman, First ascent, First Horizon Bank, FIRST Tech Challenge, First of May, First Union, Singaporeans First, First-order logic, First ladies of Nevada, Kʼómoks First Nation, First Glasgow, List of first ladies of Minnesota, First Hampshire & Dorset, First Cut, First-class cricket, FIRST Lego League Challenge, The First Noel, Deputy First Minister of Scotland, First Things First (album), First National Pictures, Stoney Nakoda First Nation, Ɂakisq̓nuk First Nation, First-person narrative, First Things First, First ladies and gentlemen of North Carolina, First Ministers' conference, First Artists, First Minister of Wales, First-order, First Step, First-rate, First Lady of the United States, First ladies and gentlemen of Alaska, First responder, First Nehru ministry, First-person (video games), First Nations in Ontario, First Kiss, First ladies and gentlemen of Guam, First Lady of Ethiopia, First principle, First and Last, First Album, First South West, First ladies of Wisconsin, First Presidency (LDS Church), First American Financial Corporation, First 100 days of the first Trump presidency, First Republic of Korea, First Merchants Corporation, First strike, First Lady of Venezuela, First minister, First grade, First Chicago Bank, First Bus East of England, First Data, First Growth, Breadth-first search, Be First, First Dates, Dehcho First Nations, First-foot, First ladies and gentlemen of Oklahoma, First Lord of the Admiralty, First ladies and gentlemen of Mexico, First Scotland East, First ladies and gentlemen of the Philippines, First-hitting-time model, First Nations in Canada, Clovis First, First ladies of Maryland, For the First Time, First Lady of the Gambia, First day of issue, First Hill, Seattle, First-wave feminism, The First 48, Love at First Sight, FIRST Championship, First West of England, First white child, First Blood, First World problem, FirstGroup, RSS First Step, Wizard's First Rule, Ceremonial first pitch, First ladies of Florida, First sergeant, First Second Books, First Expired, First Out, First lieutenant, First pass effect, Maxillary first premolar, First Church, First ladies of North Dakota, First hand, First Folio, Certified first responder, Sq'éwlets First Nation, First Evil, First Internet Bank, Sipekne'katik First Nation, First ladies and gentlemen of Arkansas, First Lady of Brazil, First Sea Lord, First Nations in Alberta, First-mover advantage, First class, Mitaanjigamiing First Nation, Nanoose First Nation, First ladies and gentlemen of Gabon, First Things First (talk show), First Lady (disambiguation), First Aliyah, Beneteau First 14