16408
Quantization of angular momentum was first postulated by Niels Bohr in his Bohr model of the atom and was later predicted by Erwin Schrödinger in his Schrödinger equation .
 person: Niels Bohr; person: Bohr; person: Erwin Schrödinger; person: Schrödinger
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: Niels Bohr, Bohr, Erwin Schrödinger, Schrödinger 
Answer:
 person: Niels Bohr; person: Bohr; person: Erwin Schrödinger; person: Schrödinger