2697
By 1825 there were usually two brigades from opposite ends of the route , ( Fort Vancouver in the Columbia District on the lower Columbia River and the other from York Factory on Hudson Bay ) , that set out in spring and passed each other in the middle of the continent .
 location: Fort Vancouver; location: Columbia District; location: Columbia River; location: York Factory; location: Hudson Bay
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 Vancouver; location: Columbia District; location: Columbia River; location: York Factory; location: Hudson Bay