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Jindřich Bačkovský ( May 4 , 1912 – 2000 ) was an eminent Czech physicist whose work focused on X-ray spectroscopy , the structure of crystals , vacuum techniques , radiometry and the physics of high pressures .
 person: Jindřich Bačkovský; location: Czech
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: Jindřich Bačkovský, Czech 
Answer:
 person: Jindřich Bačkovský; location: Czech