12090
Our data indicate that fibril formation greatly affects hydroxyproline and proline prolyl pucker ring conformation .
 Chemical: hydroxyproline; Chemical: proline prolyl
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: hydroxyproline; Chemical: proline prolyl