289260
He attained his Geshe degree at Sera Monastic University , Lhasa , and became a highly influential teacher in Tibet , unusual for teaching a great number of lay people .
 Lhasa, Tibet
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lhasa, Tibet