15263
The presence of shock waves , along with the compressibility effects of high-flow velocity ( see Reynolds number ) fluids , is the central difference between the supersonic and subsonic aerodynamics regimes .
 person: Reynolds
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: Reynolds 
Answer:
 person: Reynolds