The problem for this data set is from page 85 of the book
"Doing Data Science" by Cathy O'Neil.

Columns

BOROUGH
NEIGHBORHOOD
BUILDING CLASS CATEGORY
TAX CLASS AT PRESENT
BLOCK
LOT
EASE-MENT
BUILDING CLASS AT PRESENT
ADDRESS
APARTMENT NUMBER
ZIP CODE
RESIDENTIAL UNITS
COMMERCIAL UNITS
TOTAL UNITS
LAND SQUARE FEET
GROSS SQUARE FEET
YEAR BUILT
TAX CLASS AT TIME OF SALE
BUILDING CLASS AT TIME OF SALE
SALE PRICE
SALE DATE