103485
The shape of the drill bit s changed over time with the spoon bit and shell bit being common before the invention of the spiral or twist bit in 1771 which removes the cuttings as it turns .
 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