"demographics-portland-1-v1.dat" contains demographics for each
ProtoEntity in the Portland data set.

Each line has the following fields:

Household Id - Household containing the person

Household Income - Income Household income range in US dollars
          1   0 - 4,999
          2   5000 - 9,999
          3   10,000 - 14,999
          4   15,000 - 19,999,
          5   20,000 - 24,999
          6   25,000 - 29,999
          7   30,000 - 34,999
          8   35,000 - 39,999
          9   40,000 - 44,999
          10  45,000 - 49,999
          11  50,000 - 54,999
          12  55,000 - 59,999
          13  >= 60,000
          14  < 0

Household Size - Total number of people in the household

Home Location Id - Location Id for the home in which this household resides

Home Sublocation Id - Sublocation of the home in which this household
     resides

Vehicles - Number of vehicles in the household

Workers - Number of household members who work