1873
Royal Air Force Station Coltishall more commonly known as  RAF Coltishall  is a former  Royal Air Force  station located North-North-East of Norwich in the English county of Norfolk East Anglia from 1938 to 2006 .
 founded by: RAF Coltishall, Royal Air Force
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 founded by: RAF Coltishall, Royal Air Force