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The Maryland State Highway Administration started studies of improvements to the Capital Beltway in 1993 , and have continued , off and on , examining a number of alternatives ( including HOV lanes and high-occupancy toll lanes ) since then .
 organization: Maryland State Highway Administration; location: Capital Beltway
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:
 organization: Maryland State Highway Administration; location: Capital Beltway