5671
The British Library in London is the national library and is one of the world 's largest research libraries , holding over 150 " million items in almost all known languages and formats ; including around 25 " million books .
 British Library, London
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 British Library, London