457
 About 15 years ago , at least 80 percent of the cases were right-to-die kinds of cases , '' said Dr. Lachlan Forrow , the director of ethics programs at Beth Israel Deaconess Medical Center in Boston , who handles 50 to 100 end-of-life conflicts a year . '' 
 location contains: Boston, Beth Israel Deaconess Medical Center
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: Boston, Beth Israel Deaconess Medical Center