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Biography He was born in Cressona , Pennsylvania on February 26 , 1858 to William Hammer ( 1827 – 1895 ) and Martha Augusta Beck ( 1827 – 1861 ) .
 Cressona , Pennsylvania, Hammer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cressona , Pennsylvania, Hammer