190305
History NVDIMM ’s have evolved from the BBU ( Battery Backed Up ) DIMM which used a backup battery to sustain power to the volatile DIMM for up to 72 hours ; now , to a complete subsystem that includes multiple memory technologies and uses supercapacitors as a power source .
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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:
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