836
The PF24 approach was pioneered in the United Kingdom beginning in 2004 and in the United States beginning in 2007 .
 location: United Kingdom; location: United States
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: United Kingdom; location: United States