156999
We can equivalently express antibunching by Q < 0 where the Mandel Q Parameter is defined as If the field had a classical stochastic process underlying it , say a positive definite probability distribution for photon number , the variance would have to be greater than or equal to the mean .
 person: Mandel
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: Mandel 
Answer:
 person: Mandel