37799
In quantum mechanics , the " x " - spin and " z " - spin are " incompatible observables " , meaning the Heisenberg uncertainty principle applies to alternating measurements of them : a quantum state cannot possess a definite value for both of these variables .
 person: Heisenberg
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: Heisenberg 
Answer:
 person: Heisenberg