19358
The formation of the well - known product Br3 ( - ) , observed in the steady - state radiolysis of highly concentrated Br ( - ) aqueous solutions , has now been directly observed at ultrashort times corresponding to the relaxation of the spur .
 Chemical: Br3 ( - ); Chemical: Br ( - )
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: Br3 ( - ); Chemical: Br ( - )