21721
Analysing chemical composition of the extracted oil by GC - MS showed that the content of unsaturated fatty acids by this emerging method ( 91 . 18 % ) was similar to that by conventional organic solvent extraction ( 88 . 76 % ) .
 Chemical: unsaturated fatty acids
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: unsaturated fatty acids