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Although the early German " Panzerjäger " carried more effective weapons than the tanks on which they were based , they were generally lacking in protection for the crew , having thinly armored open-topped superstructures .
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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:
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