105119
West Wratting Hall was home to E.P. Frost who built an unsuccessful flapping-wing flying machine ( " ornithopter " ) , powered by steam .
 E.P. Frost
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 E.P. Frost