93780
The cost of a full digital scan and restoration of the best surviving elements has been estimated by film preservationist Robert A. Harris at between $ 1 million to $ 2 million .
 Robert A. Harris
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:
 Robert A. Harris