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Chairman , LB&SCR After Laing retired at the end of 1855 to pursue a political career , Schuster replaced him as chairman of the LB&SCR , instituting a policy of rapidly expanding new routes throughout South London , Sussex , and East Surrey .
 Laing, Schuster, South London, Sussex
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Laing, Schuster, South London, Sussex