18045
 But a renewable energy advocate , Amory Lovins of the Rocky Mountain Institute , says the nation 's car fleet could be converted to hydrogen in less than a decade , and a network of small hydrogen reformers devices that produce hydrogen from natural gas or other sources could be quickly installed in 10 to 20 percent of the nation 's 180,000 gas stations for $ 2 billion to $ 4 billion . 
 company: Amory Lovins, Rocky Mountain Institute
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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 company: Amory Lovins, Rocky Mountain Institute