3043
Consequently , the obtained results , when employing cellulose as a substrate and under these conditions , suggest that the grafting - from approach is superior to the grafting - to technique with respect to controlling the distribution of the polymeric content on the surface .
 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