9073
The near - edge fine structure can be compared with great accuracy to simulations and reveal either an sp ( 3 ) - like configuration for a trivalent Si or a more complicated hybridized structure for a tetravalent Si impurity .
 Chemical: Si; Chemical: Si
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Si; Chemical: Si