15253
It is defined as the range of speeds between the critical Mach number , when some parts of the airflow over an aircraft become supersonic , and a higher speed , typically near Mach 1.2 , when all of the airflow is supersonic .
 location: Mach
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: Mach 
Answer:
 location: Mach