30575
For his book '' Lincoln 's Emancipation Proclamation : The End of Slavery in America '' -LRB- Simon & Schuster -RRB- , he is to receive $ 35,000 and a bronze replica of a Saint-Gaudens bust of Lincoln on April 21 at a dinner in Richmond at the Tredegar Iron Works , the Confederacy 's principal cannon factory .
 location contains: Richmond, Tredegar Iron Works
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:  Richmond, Tredegar Iron Works 
Answer:
 location contains: Richmond, Tredegar Iron Works