980
He then served as Special Adviser to three successive Secretaries of  State for Trade and Industry   Norman Tebbit  1984-5 ; Leon Brittan 1985-6 and Paul Channon 1986-7 .
 employee of: State for Trade and Industry, Norman Tebbit
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:
 employee of: State for Trade and Industry, Norman Tebbit