61236
As in Ernst Mach 's phenomenalism , whereby the mind knows only actual or potential sensory experience , verificationists took all sciences ' basic content to be only sensory experience .
 person: Ernst 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: Ernst Mach 
Answer:
 person: Ernst Mach