32333
A 1994 incident , in which a man was asphyxiated after entering an argon-filled section of oil pipe under construction in Alaska , highlights the dangers of argon tank leakage in confined spaces and emphasizes the need for proper use , storage and handling .
 Alaska
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Alaska