90558
Around the late 1840 s , Charles Nordhoff observed work gangs engaged in a type of labor called " cotton-screwing " in Mobile Bay .
 person: Charles Nordhoff; location: Mobile Bay
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Charles Nordhoff, Mobile Bay 
Answer:
 person: Charles Nordhoff; location: Mobile Bay