private Func <PersonWithMetadata, Tuple <bool, bool, bool> > GetHasFatherHasMotherHasSpouse(FamilyModel familyModel)
        {
            return(person =>
            {
                if (person.BooleanSamples == null ||
                    !person.BooleanSamples.ContainsKey(PersonStatisticKeys.HasFather) ||
                    !person.BooleanSamples.ContainsKey(PersonStatisticKeys.HasMother) ||
                    !person.BooleanSamples.ContainsKey(PersonStatisticKeys.HasSpouse))
                {
                    return familyModel.HasFatherHasMotherHasSpouse(person);
                }

                return new Tuple <bool, bool, bool>(person.BooleanSamples[PersonStatisticKeys.HasFather], person.BooleanSamples[PersonStatisticKeys.HasMother], person.BooleanSamples[PersonStatisticKeys.HasSpouse]);
            });
        }