21563
The photoinduced and thermal denitrogenation of crystalline triazolines with bulky substituents leads to the quantitative formation of aziridines in clean solid - to - solid reactions despite very large structural changes in the transition from reactant to product .
 Chemical: triazolines; Chemical: aziridines
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: triazolines; Chemical: aziridines