19726
Finally , WAXD results finds that the silk is at least 7 - 8 % crystalline , with beta - sheet interplane spacings of 3 . 7 and 4 . 5 A .
 None
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