2843
Peroxisome proliferator - activated receptor - beta / delta ( PPAR delta ) is a ubiquitously expressed , ligand - activated transcriptional factor that performs diverse critical functions in normal cells ( e . g . , fatty acid metabolism , obesity , apoptosis , and inflammation ) .
 Chemical: fatty acid
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: fatty acid