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Clearly , this is a tough political challenge for Mr. Abbas , and it is also a tough challenge for him to crack down on the militants in Gaza and the West Bank who continue to launch attacks on Israel .
 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: 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:  Israel, West Bank 
Answer:
 location contains: Israel, West Bank