1687
 The Palestinian president , Mahmoud Abbas , faces a daunting set of interlocking challenges : preventing Palestinian terrorism , ending the chaos in Palestinian cities , reviving the Palestinian economy and persuading Israel to return to the bargaining table and to consider the far more painful step of removing tens of thousands of settlers from the West Bank . 
 location contains: Israel, West Bank
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Israel, West Bank 
Answer:
 location contains: Israel, West Bank