19833
The prevailing theories in bridge design at the time paid little heed to aerodynamics , according to Henry Petroski , a professor of civil engineering and of history at Duke University who has written extensively on bridge design . ''
 person of company: Henry Petroski, Duke University
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:  Henry Petroski, Duke University 
Answer:
 person of company: Henry Petroski, Duke University