system: You are a text-to-SQL generator. Given a database schema and a question, reply with a single valid SQLite query that answers it. Output only the SQL on one line, with no explanation and no markdown.

user: Schema:
CREATE TABLE Country (
  CountryCode text PRIMARY KEY,
  ShortName text,
  TableName text,
  LongName text,
  Alpha2Code text,
  CurrencyUnit text,
  SpecialNotes text,
  Region text,
  IncomeGroup text,
  Wb2Code text,
  NationalAccountsBaseYear text,
  NationalAccountsReferenceYear text,
  SnaPriceValuation text,
  LendingCategory text,
  OtherGroups text,
  SystemOfNationalAccounts text,
  AlternativeConversionFactor text,
  PppSurveyYear text,
  BalanceOfPaymentsManualInUse text,
  ExternalDebtReportingStatus text,
  SystemOfTrade text,
  GovernmentAccountingConcept text,
  ImfDataDisseminationStandard text,
  LatestPopulationCensus text,
  LatestHouseholdSurvey text,
  SourceOfMostRecentIncomeAndExpenditureData text,
  VitalRegistrationComplete text,
  LatestAgriculturalCensus text,
  LatestIndustrialData integer,
  LatestTradeData integer,
  LatestWaterWithdrawalData integer
);
CREATE TABLE Series (
  SeriesCode text PRIMARY KEY,
  Topic text,
  IndicatorName text,
  ShortDefinition text,
  LongDefinition text,
  UnitOfMeasure text,
  Periodicity text,
  BasePeriod text,
  OtherNotes integer,
  AggregationMethod text,
  LimitationsAndExceptions text,
  NotesFromOriginalSource text,
  GeneralComments text,
  Source text,
  StatisticalConceptAndMethodology text,
  DevelopmentRelevance text,
  RelatedSourceLinks text,
  OtherWebLinks integer,
  RelatedIndicators integer,
  LicenseType text
);
CREATE TABLE CountryNotes (
  Countrycode text PRIMARY KEY,
  Seriescode text PRIMARY KEY,
  Description text
);
CREATE TABLE Footnotes (
  Countrycode text PRIMARY KEY,
  Seriescode text PRIMARY KEY,
  Year text PRIMARY KEY,
  Description text
);
CREATE TABLE Indicators (
  CountryName text,
  CountryCode text PRIMARY KEY,
  IndicatorName text,
  IndicatorCode text PRIMARY KEY,
  Year integer PRIMARY KEY,
  Value integer
);
CREATE TABLE SeriesNotes (
  Seriescode text PRIMARY KEY,
  Year text PRIMARY KEY,
  Description text
);
-- foreign keys: CountryNotes.Countrycode -> Country.CountryCode; CountryNotes.Seriescode -> Series.SeriesCode; Footnotes.Countrycode -> Country.CountryCode; Footnotes.Seriescode -> Series.SeriesCode; Indicators.CountryCode -> Country.CountryCode; SeriesNotes.Seriescode -> Series.SeriesCode

Hint: South Asia is the name of the region; IndicatorName = 'Life expectancy at birth, female (years)'; greater than 50 refers to Value>50; DIVIDE(COUNT(CountryCode where IndicatorName = 'Life expectancy at birth, female (years)'; Value>50; Region = 'South Asia'), COUNT(CountryCode where Region = 'South Asia')) as percentage;

Question: What percentage of countries in South Asia have the Life expectancy at birth, female (years) greater than 50?

assistant: SELECT CAST(SUM(CASE WHEN T2.value > 50 THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(T1.CountryCode) FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.Region = 'South Asia' AND T2.IndicatorName = 'Life expectancy at birth, female (years)'