6780
Most commonly used bacteria are " Salmonella typhimurium " , " Escherichia Coli " , " Bifidobacteria " , " Streptococcus " , " Lactobacillus " , " Listeria " and " Bacillus subtilis " .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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