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Other firms including  Masten Space Systems  of Mojave  California  and Armadillo Aerospace of Rockwall Texas are testing systems that would carry unmanned payloads to space .
 state or province of headquarters: Masten Space Systems, California
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:
 state or province of headquarters: Masten Space Systems, California