360540
In April 1956 , the Sukhoi S-1 prototype equipped with AL-7F exceeded Mach 2 at 18,000 m ( 70,900 ft ) , which lead to production of Su-7 ' Fitter ' and Su-9 ' Fishpot ' equipped with this engine .
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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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