51044
The earliest tentative evidence for iron-making is a small number of iron fragments with the appropriate amounts of carbon admixture found in the Proto-Hittite layers at Kaman-Kalehöyük and dated to 2200 – 2000 " BC .
 location: Kaman-Kalehöyük
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: Kaman-Kalehöyük 
Answer:
 location: Kaman-Kalehöyük