239001
Characters Vehicles First released in 1987 , each of these highly-advanced attack units was meant to be driven/piloted by a member of Battleforce 2000 ( sold separately ) , and the first six vehicles combined to form " the most indestructible stronghold in the entire G.I. Joe arsenal ... the BF 2000 Future Fortress ! "
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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:  
Answer:
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