8068
Of several supertall skyscrapers proposed for Philadelphia ( including the Center City Tower and an early version of Comcast Center ) , this would be the first to be constructed .
 location: Philadelphia
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: Philadelphia