256427
During this time he has also done a big research about cooking ( techniques , products and recipes ) and gastronomy ( culture about or tied to eating ) in Catalonia , which he has documented since the Middle Ages ( as for example in his book Llibre de Sent Soví ) and he has diffused it in a large amount of books and articles .
 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