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One example is the measurement of the invariant mass distribution of electron-positron pairs produced in the decay of Sigma-zero hyperons to Lambda-zero hyperons .
 location: Sigma-zero; location: Lambda-zero
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:
 location: Sigma-zero; location: Lambda-zero