354175
Decay It has a half-life of about 30.17 years , and decay s by beta emission to a metastable nuclear isomer of barium-137 : barium-137m ( 137mBa , Ba-137m ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None