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Grain elevators built in the 1920s and '30s have six - inch concrete walls and a tubular shape that would easily contain semicircular cells with a control point in the middle , the New York firm says .
 date: 1920s; date: '30s; quantity: six - inch; geographical social political: New York
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 date: 1920s; date: '30s; quantity: six - inch; geographical social political: New York