The dataset is converted into a three-column long format with
columns s for subject, p for predicate and o for
object.
dataset_to_triples(x, idcol = NULL)The long form version of the original dataset, retaining the attributes and class.
An R object that contains the data of the dataset (a data.frame or
inherited from data.frame), for example, dataset()
tibble::tibble(), tsibble::tsibble(), data.table::data.table().
The identifier column. If idcol is NULL it attempts to
use the row.names(df) as an idcol.