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
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None