301997
While at Miss Hewitt 's , Bella delved into a number of subjects including opera and theatre , and continued this lifelong love of learning into her collecting of ephemera , which started in 1923 .
 Bella
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bella