16492
Samples were measured using a miniature gas chromatograph and / or gas chromatography - mass spectroscopy for ester taggant , alcohol , and ketone concentrations .
 Chemical: alcohol; Chemical: ketone
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: alcohol; Chemical: ketone