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 A few weeks ago , Google announced that it planned to install a large solar energy system on the roof of its headquarters in Mountain View , Calif. '' Green tech '' is all the rage right now in Silicon Valley , with venture money pouring into environmental start-ups , and hip technology companies falling all over themselves to show their earth-friendly bona fides . 
 location contains: Silicon Valley, Mountain View
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:
 location contains: Silicon Valley, Mountain View