139135
Designed by Walter W. Ahlschlager , the structure contained 4 levels of underground parking and 3 levels of air conditioned office and retail space .
 Walter W. Ahlschlager
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Walter W. Ahlschlager