name: Name of the property


location: Text location


borough: Borough name


content: HTML content of the sign


propID: A unique identifier for the property. The first character is a abbreviation of the borough,
followed by a 3 digit number. Anything after the first 4 characters represents a subproperty.
Boroughs:
X - Bronx
B - Brooklyn
M - Manhattan
Q - Queens
R - Staten Island
See http://www.nycgovparks.org/bigapps/DPR_Parks_001.xml or http://www.nycgovparks.org/bigapps/DPR_Parks_001.json