3237
After learning about their efforts to abolish untouchability and the caste system , and towards social reform , they were invited to Mahatma Gandhi 's ashram in Sevagram in 1944 , where they stayed for two weeks .
 Mahatma Gandhi, Sevagram
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Mahatma Gandhi, Sevagram