2236
It consists of two round stone of which the bottom part is attached to the ground or the floor in the house and has a big nail or wood in the centre to keep the top stone in place while grinding .
 None
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:
 None