17152
According to the regression coefficients significance of the quadratic polynomial model , the optimum extrusion parameters were as follows : extrusion temperature , 115 degrees C ; feed moisture , 31 % ; and screw speed , 180 rpm .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None