1583
The free service in Mountain View , the company 's base in the heart of Silicon Valley , will become generally available on Wednesday after nine months of testing .
 location contains: Silicon Valley, Mountain View
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Silicon Valley, Mountain View 
Answer:
 location contains: Silicon Valley, Mountain View