27420
Terrestrial biomes lying within the Arctic or Antarctic Circles , at high altitudes or in extremely arid areas are relatively barren of plant and animal life ; species diversity reaches a peak in humid lowlands at equatorial latitudes .
 location: Arctic; location: Antarctic Circles
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: Arctic, Antarctic Circles 
Answer:
 location: Arctic; location: Antarctic Circles