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One of them was owned by the Baltimore and Ohio Railroad ( now the Philadelphia Subdivision of CSX ) and was located at Main and Sixth Streets , where the SEPTA Route 11 trolley crosses today , and the other was owned by the Pennsylvania Railroad and was located where the current station stands , and later across the tracks .
 Baltimore and Ohio Railroad, Philadelphia Subdivision, CSX, Pennsylvania Railroad
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Baltimore and Ohio Railroad, Philadelphia Subdivision, CSX, Pennsylvania Railroad