19503
The phenomenon has been interpreted in the framework of Ostwald 's rule of stages that predicts the formation of phases to proceed with increasing condensation time towards increasing stability .
 person: Ostwald
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: Ostwald 
Answer:
 person: Ostwald