9268
The previous flag had consisted of the city 's coat of arms on a white and blue background , which was considered to be overly simplistic by then mayor William Dennison .
 person: William Dennison
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: William Dennison