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The term " antibacterial " derives from Greek ἀντί ( " anti " ) , " against " + βακτήριον ( " baktērion " ) , diminutive of βακτηρία ( " baktēria " ) , " staff , cane " , because the first bacteria to be discovered were rod-shaped .
 None
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:  
Answer:
 None