5141
Microbial metabolism of dietary carbohydrates results mainly in the formation of short chain fatty acids and gases .
 Chemical: carbohydrates; Chemical: 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: carbohydrates; Chemical: fatty acids