87021
In the marine environment the most well-known class of iron oxidizing-bacteria ( FeOB ) is Zetaproteobacteria .
 location: Zetaproteobacteria
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: Zetaproteobacteria 
Answer:
 location: Zetaproteobacteria