1493
Probe - type ultrasonication has been employed for surfactant - aided solubilization , or individualization , of single - walled carbon nanotubes ( SWNTs ) .
 Chemical: carbon
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: carbon