88590
Initially animals were kept for meat , and archaeologist Andrew Sherratt has suggested that dairying , along with the exploitation of domestic animals for hair and labor , began much later in a separate secondary products revolution in the fourth millennium BC .
 person: Andrew Sherratt
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Andrew Sherratt 
Answer:
 person: Andrew Sherratt