var is a HASH with 5 keys
        the keys are 'age', 'fname', 'kids', 'last_name', 'occupation'
        key 'kids' is an ARRAY containing HASHREFs:
                the keys are 'age', 'name', 'vaccinated'
                key 'vaccinated' is a SCALAR
                key 'age' is a SCALAR
                key 'name' is a SCALAR
        key 'fname' is a SCALAR
        key 'age' is a SCALAR
        key 'occupation' is a HASH with 2 keys
                the keys are 'title', 'years_on_job'
                key 'title' is a SCALAR
                key 'years_on_job' is a SCALAR
        key 'last_name' is a SCALAR