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Transbay commuting in the San Francisco Bay Area was primarily ferry based until the advent of automobiles in the 1940 s and most bridges in the area were built to supplant ferry services .
 location: San Francisco Bay Area
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: San Francisco Bay Area 
Answer:
 location: San Francisco Bay Area