19357
The league average for on-base percentage in Major League Baseball has varied considerably over time ; at its peak in the late 1990 s , it was around .
 organization: Major League Baseball
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: Major League Baseball 
Answer:
 organization: Major League Baseball