75173
In 1792 he completed his first significant survey , mapping a route to Lake Athabasca ( where today 's Alberta / Saskatchewan border is located ) .
 location: Lake Athabasca; location: Alberta; location: Saskatchewan
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Lake Athabasca, Alberta, Saskatchewan 
Answer:
 location: Lake Athabasca; location: Alberta; location: Saskatchewan