:'''4. City (U.S.)'''
:: There are some patterns that can be used to extract city information.
::Three lists of samples extracted from addrline1, addrline2 and city are used to summarize the patterns. They are in
Z:/PatentAddress/
::*'\s{2,} CITY NAME, STATE POSTCODE'
P.O. BOX 15439 WILMINGTON, DE 19850-5439
:::* '[,]\s{1,} CITY NAME[,] STATE POSTCODE'
920 DISC DRIVE, SCOTTS VALLEY, CA 95067-0360
BALLSTON TOWER ONE 800 NORTH QUINCY STREET, ARLINGTON, VA 22217-5660
:::* 'CITY NAME, STATE POSTCODE' (no leading spaces)
PHILADELPHIA, PA 19104-3147
ROCHESTER, NY 14650-2201
::::*Noise:
800 NORTH QUINCY STREETARLINGTON, VA 22217-5660 (street name instead of city name)
BATON, ROUGE, LA 70809-4562 (the city name is separated by a comma)
ST. PAUL, MIN 55133-3427 (special)
:: Three lists of samples extracted from addrline1, addrline2 and city are used to summarize the patterns. The samples are in
Z:/PatentAddress/
:'''5. Issues'''