15764
Regarding non - neoplastic lesions , rat - specific changes were observed in kidney , with an increase in the severity of chronic progressive nephropathy in both sexes at 5 , 000 ppm .
 None
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:  
Answer:
 None