605
Sixteen samples from different parts ( roots , stem , and tuber ) of S . rotunda were collected from four regions of Cambodia ( Battambang , Pailin , Siem Reap , and Kampot ) .
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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