25655
EET time from 650 nm Chl b --> Chl a and downward EET from Chl ( s ) a state ( s ) at 665 nm occurs in 4 . 9 +/- 0 . 7 ps .
 Chemical: Chl b; Chemical: Chl a
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: Chl b; Chemical: Chl a