code: def load_febrl1(return_links=False):
      
  
      df = _febrl_load_data('dataset1.csv')
  
      if return_links:
          links = _febrl_links(df)
          return df, links
      else:
          return df
docs: Load the FEBRL 1 dataset.
  
      The Freely Extensible Biomedical Record Linkage (Febrl) package is
      distributed with a dataset generator and four datasets generated
      with the generator. This function returns the first Febrl dataset
      as a :class:`pandas.DataFrame`.
  
              *"This data set contains 1000 records (500 original and
              500 duplicates, with exactly one duplicate per original
              record."*
  
      Parameters
      ----------
      return_links: bool
          When True, the function returns also the true links.
  
      Returns
      -------
      pandas.DataFrame
          A :class:`pandas.DataFrame` with Febrl dataset1.csv. When
          return_links is True, the function returns also the true
          links. The true links are all links in the lower triangular
          part of the matrix.