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: portion = divide(count(CountryName where Year = '1961' and Value>50), count(CountryName))*100%; nations in Latin America and the Caribbean refers to region = 'Latin America & Caribbean';  more than 50% of their land used for agriculture refers to value where indicatorname = 'Agricultural land (% of land area)'>50; in 1961 refers to Year = '1961'

Question: What portion of the nations in Latin America and the Caribbean had more than 50% of their land used for agriculture in 1961?

assistant: SELECT CAST(SUM(CASE WHEN T1.Value > 50 THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(T2.CountryCode) FROM Indicators AS T1 INNER JOIN Country AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.Year = 1961 AND T2.Region = 'Latin America & Caribbean' AND indicatorname = 'Agricultural land (% of land area)'