25194
Molecular band spectra showed that the nuclear spin of nitrogen-14 is 1 ( i.e. , equal to the reduced Planck constant ) and more generally that the spin is integral for nuclei of even mass number and half-integral for nuclei of odd mass number .
 person: Planck
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: Planck 
Answer:
 person: Planck