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In the Stephen Mulhern era , there were 15 numbered squares in the form of a pyramid ( with 15 at the top ) with each row , starting at the bottom , being worth a higher amount of money ( £ 2,500 / £ 5,000 / £ 10,000 / £ 25,000 / £ 50,000 ) .
 person: Stephen Mulhern
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: Stephen Mulhern