434
It is hard to imagine that a single treatment can shift so radically from making you better and saving your life , to one that could kill you , '' said Dr. Lee H. Schwamm , director of acute stroke care at the Massachusetts General Hospital in Boston .
 location contains: Boston, Massachusetts General Hospital
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:  Boston, Massachusetts General Hospital 
Answer:
 location contains: Boston, Massachusetts General Hospital