6739
The problems had started during the funded study when  Singer  Librascope and Thomson CSF who were partnering with  Rockwell  to develop the combat system refused to release their intellectual property or their software code for Rockwell to sell .
 None
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:   
Answer:
 NA: Singer, Rockwell