2807
When  Arkansas  left the Union the Yell Rifles became part of the  1st Arkansas Infantry  later designated the 15th Arkansas of which he was elected Colonel .
 founded by: Arkansas, 1st Arkansas Infantry
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: Arkansas, 1st Arkansas Infantry