391090
The skyscraper was designed by Pei Cobb Freed & Partners , and received a Leed Gold certification .
 Pei Cobb Freed & Partners
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pei Cobb Freed & Partners