393466
Discovery In 1997 , the Hawai i Mapping Research Group conducted a detailed sonar survey of the seafloor around Guam , discovering what is believed to be the second or third deepest location in the world 's oceans ; its existence was confirmed in 2001 and it was temporarily named HMRG Deep .
 location: Guam
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: Guam 
Answer:
 location: Guam