5444
The city grew as a stop for steamboats to take on fresh water and supplies , especially after steamboat traffic boomed when gold was discovered in the Black Hills .
 location: Black Hills
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: Black Hills