public String getOldestPerson() throws ParseException {
        String name = "";
        long age = 0;
        for (String[] item : data) {
            long ageInSeconds = getAgeInSeconds(item[DOB_INDEX].trim());
            if (ageInSeconds > age) {
                age = ageInSeconds;
                name = item[NAME_INDEX].trim();
            }
        }
        return name;
    }