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Classmates may have included William Smith , Richard Field , John Sadler , Arthur Cawdrey , John Lane , Robert Dibdale and Thomas Green .
 person: Richard Field; person: Robert Dibdale
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Richard Field; person: Robert Dibdale