25758
The later entry is particularly noteworthy as it constitutes the first clear evidence for the switch to torsion catapults , which are more powerful than the more-flexible crossbows and which came to dominate Greek and Roman artillery design thereafter .
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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:
 None