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Martin van Creveld , a historian at Hebrew University of Jerusalem , says that soldiers in the dominant army often became demoralized by the frustrations of trying to defeat guerrillas .
 person of company: Martin van Creveld, Hebrew University of Jerusalem
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:  Martin van Creveld, Hebrew University of Jerusalem 
Answer:
 person of company: Martin van Creveld, Hebrew University of Jerusalem