11912
The truss-and-cantilever eastern span , which runs two and a quarter miles from Yerba Buena Island to Oakland , is more vulnerable to earthquakes than is the western span , a suspension design that runs from the island to San Francisco .
 location contains: San Francisco, Yerba Buena Island
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: 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} 
Answer:
 location contains: San Francisco, Yerba Buena Island