5552
From the perspective of classical inorganic chemistry , which assigns formal oxidation states to each atom , pyrite is probably best described as FeS .
 location: FeS
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: FeS 
Answer:
 location: FeS