22155
Lattice strain of Pt - based catalysts reflecting d - band status is the decisive factor of their catalytic activity toward oxygen reduction reaction ( ORR ) .
 Chemical: Pt; Chemical: oxygen
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: Pt; Chemical: oxygen