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Congress , war and the question of slavery In 1861 , Crisfield was elected as a Unionist to the Thirty-seventh Congress from the 1st Congressional district of Maryland , serving one term from March 4 , 1861 until March 3 , 1863 .
 Crisfield, Unionist, Maryland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Crisfield, Unionist, Maryland