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With the advent of steel , which has a high tensile strength , much larger bridges were built , many using the ideas of Gustave Eiffel .
 person: Gustave Eiffel
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: Gustave Eiffel 
Answer:
 person: Gustave Eiffel