#' Vocabulary To Rename Categorical Variables With Two Valid Categories
#'
#' Later the filename may be omitted.
#' The \code{canonical_name} is suggested for programmatic use in R files.
#' The keywords should be consistent with the ELSST thesaurus.
#'
#' @format A data frame with 6 rows in 9 variables:
#' \describe{
#' \item{filename}{The name of the GESIS SPSS file where the variable can be found}
#' \item{r_name}{The raw variable name in the GESIS SPSS file.}
#' \item{normalized_names}{The variable label after normalization}
#' \item{canonical_names}{The preferred variable label}
#' \item{keyword_1}{If necessary, later new keyword columns can be added.}
#' \item{geo_qualifier}{To explicitly refer to separate questionnaire items like the Turkish Cypriot Community}
#' }
#' @seealso category_labels_2
"categorical_variables_2"
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