12328
Depending on their shapes , these nanocrystals exhibit various surface facets , and the assignments of their surface facets have routinely been used to rationalize or predict their catalytic activity in a variety of chemical transformations .
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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:
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