88042
He developed the " Helland-Hansen Photometer " in 1910 , which was carried on board Michael Sars .
 Helland-Hansen, Michael Sars
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Helland-Hansen, Michael Sars