173775
Prior to designation the present owner altered the interior using a device Clough 's more famous contemporary John Calvin Stevens had employed when remodeling the Federal Elias Thomas House in Portland , Maine , combining two downstairs rooms and marking the transition with a screen of columns and pilasters .
 person: Clough; person: John Calvin Stevens
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Clough, John Calvin Stevens 
Answer:
 person: Clough; person: John Calvin Stevens