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The tallest building in Pittsburgh until 1970 , when it was eclipsed by the U.S. Steel Tower , it is capped by a " step pyramid " structure several stories high .
 location: Pittsburgh; location: U.S. Steel Tower
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Pittsburgh, U.S. Steel Tower 
Answer:
 location: Pittsburgh; location: U.S. Steel Tower