11727
There were no indications from the various clinical and gross pathological examinations that the oral administration of PEG - PVA grafted copolymer to the F0 - parental rats produced any signs of general , reproductive , or developmental toxicity in the F0 or F1 animals or F2 implants .
 Chemical: PEG - PVA
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: PEG - PVA 
Answer:
 Chemical: PEG - PVA