32593
As the symptoms of arsenic poisoning are not very specific , it was frequently used for murder until the advent of the Marsh test , a sensitive chemical test for its presence .
 person: Marsh
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: Marsh 
Answer:
 person: Marsh