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It was a necessary innovation in the development of tall buildings in the wet  soil  of  Chicago  in the 19th century where it was developed by John Wellborn Root who came up with the idea of interlacing the concrete slab with steel beams .
 cities of residence: soil, Chicago
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:
 cities of residence: soil, Chicago