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These included a boiler of simpler construction which was parallel rather than tapered and a round-topped firebox rather than a Belpaire firebox .
 location: Belpaire
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: Belpaire