This is Mom (2)'s main record: BC000    0    2            M                                      999
$VAR1 = {
          '3' => {
                   'CHILDREN' => [
                                   {
                                     'gender' => 'F',
                                     'birth_year' => '51',
                                     'ID' => 1
                                   },
                                   {
                                     'ID' => 4,
                                     'birth_year' => '  50',
                                     'gender' => 'M'
                                   },
                                   {
                                     'gender' => 'F',
                                     'birth_year' => '47',
                                     'ID' => 5
                                   },
                                   {
                                     'birth_year' => undef,
                                     'gender' => 'F',
                                     'ID' => 6
                                   },
                                   {
                                     'gender' => 'M',
                                     'birth_year' => '',
                                     'ID' => 7
                                   },
                                   {
                                     'gender' => 'F',
                                     'birth_year' => '42',
                                     'ID' => 8
                                   },
                                   {
                                     'ID' => 9,
                                     'birth_year' => '39',
                                     'gender' => 'F'
                                   },
                                   {
                                     'birth_year' => '35',
                                     'gender' => 'F',
                                     'ID' => 10
                                   }
                                 ]
                 },
          '8' => {
                   'CHILDREN' => [
                                   {
                                     'ID' => 11,
                                     'gender' => 'M',
                                     'birth_year' => '  11'
                                   },
                                   {
                                     'birth_year' => '  9',
                                     'gender' => 'F',
                                     'ID' => 12
                                   }
                                 ]
                 },
          '2' => {
                   'birth_year' => ''
                 },
          '36' => {
                    'CHILDREN' => [
                                    {
                                      'ID' => 3,
                                      'gender' => 'F',
                                      'birth_year' => '  65'
                                    }
                                  ]
                  }
        };