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: by how much = subtract(sum(value where Year = 1961), sum(value where Year = 1960)); indicator on Adolescent fertility rate refers to IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)%'

Question: By how much did the indicator on Adolescent fertility rate increase from 1960 to 1961 in the country whose Alpha2Code is 1A?

assistant: SELECT ( SELECT T2.Value FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.Alpha2Code = '1A' AND T2.IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)' AND T2.Year = 1961 ) - ( SELECT T2.Value FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.Alpha2Code = '1A' AND T2.IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)' AND T2.Year = 1960 ) DIFF