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On Yerba Buena Island , the double-decked crossing is a concrete viaduct east of the west span 's cable anchorage , the Yerba Buena Tunnel through the island 's rocky central hill , another concrete viaduct , and a longer curved high-level steel truss viaduct that spans the final to the cantilever bridge .
 location: Yerba Buena Island; location: Yerba Buena Tunnel
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Yerba Buena Island; location: Yerba Buena Tunnel