45875
A total of 20 Ec class engines were built by Baldwin Locomotive Works in Philadelphia , Pennsylvania , USA , in the first half of 1901 , and entered service with the WAGR later that year .
 Baldwin Locomotive Works, Philadelphia , Pennsylvania
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Baldwin Locomotive Works, Philadelphia , Pennsylvania