22469
As in other ornithomimids but unusually among theropods , the three fingers were roughly the same length , and the claws were only slightly curved ; Henry Fairfield Osborn , describing a skeleton of " S. altus " in 1917 , compared the arm to that of a sloth .
 person: Henry Fairfield Osborn
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: Henry Fairfield Osborn 
Answer:
 person: Henry Fairfield Osborn