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The first twelve spacecraft flew to Salyut 6 , with the next thirteen , including the Kosmos 1669 spacecraft - a Progress spacecraft which was given a Kosmos designation and omitted from the sequence of Progress designations - going to Salyut 7 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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