51928
It has been argued by some physicists , e.g. , M. J. Duff , that the laws of physics are inherently dimensionless .
 person: M. J. Duff
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: M. J. Duff 
Answer:
 person: M. J. Duff