18294
We find that the debromination reaction results from the electronic transitions from pi to sigma * orbitals when nona - BDEs are exposed to UV - light in the sunlight region , at which point the two low - lying excited states for each nona - BDE are pi sigma * ( 5Br ) and pi sigma * ( 4Br ) , which correlate to the sigma * orbitals located on the penta - Br and tetra - Br substituted phenyls , respectively .
 Chemical: nona - BDEs; Chemical: nona - BDE; Chemical: 5Br; Chemical: 4Br; Chemical: penta - Br; Chemical: tetra - Br; Chemical: phenyls
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: nona - BDEs, nona - BDE, 5Br, 4Br, penta - Br, tetra - Br, phenyls 
Answer:
 Chemical: nona - BDEs; Chemical: nona - BDE; Chemical: 5Br; Chemical: 4Br; Chemical: penta - Br; Chemical: tetra - Br; Chemical: phenyls