16578
Mr. Young , right , one of the founders of Farm Aid , made the announcement on Thursday at Reading Terminal Market in Philadelphia -- just across the Delaware River from Camden -- and organizers of the concert said the area had been chosen because so much land in Pennsylvania and New Jersey is used for agriculture .
 location contains: Pennsylvania, Philadelphia; location contains: New Jersey, Camden; location contains: New Jersey, Delaware River
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:  Pennsylvania, Philadelphia; New Jersey, Camden; New Jersey, Delaware River 
Answer:
 location contains: Pennsylvania, Philadelphia; location contains: New Jersey, Camden; location contains: New Jersey, Delaware River