5932
Although R. J. Mitchell is justifiably known as the engineer who designed the Spitfire his premature death in 1937 meant that all development after that date was undertaken by a team led by his chief draughtsman  Joe Smith  who became  Supermarine  's chief designer on Mitchell's death .
 None
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:
 NA: Joe Smith, Supermarine