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Schommer was an active member of the High-z Supernova Search Team and co-authored their 1998 paper arguing that we live in an accelerating universe with a cosmological constant .
 Schommer, High-z Supernova Search Team
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Schommer, High-z Supernova Search Team