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the noted theater architect Thomas W. Lamb , it was built at the cost of $ 4.75 million in 349 days by boxing promoter Tex Rickard , who assembled backers he called his " 600 millionaires " to fund the project .
 Thomas W. Lamb, Tex Rickard
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:
 Thomas W. Lamb, Tex Rickard