345768
There is a section in the middle of the lake that is so rugged that if marked with sonar , it appears as the pulses of a heart beat on a pulse reader .
 None
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:  
Answer:
 None