5130
In 1873 Congress authorized the addition of a cavalry post and changed its designation to Fort Abraham Lincoln when foot soldiers were deemed ineffective against their mounted adversaries .
 location: Fort Abraham Lincoln
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Fort Abraham Lincoln