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

Each line has the following fields:

Person Id - Id of the person.

Household Id - Household containing the person.  Household
demographics can be found in the household demographics file.

Age - Age of the person, in years

Gender 
       1 Male
       2 Female

Worker - Worker status
       1 Works
       2 Does not work

Relationship - Relationship to the head of household\