Table:
text: List of tallest buildings in Portland, Oregon
Timeline of tallest buildings
Timeline of tallest buildings
Name_ Street_address Years_as_tallest Height_feet_m Floors
Wells Fargo Building 309 SW 6th Avenue 1907–1911 185 / 56 12
Yeon Building 522 SW 5th Avenue 1911–1913 194 / 59 15
American Bank Building 621 SW Morrison Street 1913–1927 207 / 63 15
Public Service Building 920 SW Sixth Avenue 1927–1962 220 / 67 16
Hilton Portland Hotel 921 SW Sixth Avenue 1963–1965 241 / 73 22
Harrison West Condominium Tower 200 SW Harrison 1965–1969 256 / 78 25
Union Bank of California Tower 707 SW Washington Street 1969–1970 268 / 82 15
Standard Insurance Center 900 SW Fifth Avenue 1970–1972 367 / 112 27
Wells Fargo Center 1300 SW 5th Avenue 1972–present 546 / 166 41

Question: Of the tallest buildings in Portland, Oregon, how many stories does 921 sw sixth avenue have the least?

Question: From the list of tallest buildings in Portland, Oregon, what is the address of the Union Bank of California tower?