12070
He was also one of the performers on the Syd Barrett Tribute at the Barbican in London performing with Roger Waters the members of  Pink Floyd  ( billed as Rick Wright David Gilmour and  Nick Mason  ) and Captain Sensible .
 employee of: Pink Floyd, Nick Mason
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Pink Floyd, Nick Mason 
Answer:
 employee of: Pink Floyd, Nick Mason