code: def get_default_paths():
      """
      Gets base paths for the data directories
  
      If DATA_ROOT is set in the environment, use that as the root
      otherwise use "./data"
      individual paths can also be set in the environment
      """
      DATA_ROOT = os.environ.get("DATA_ROOT", "data")
      defaults = {
          "TOKENIZE_DATA_DIR": DATA_ROOT + "/tokenize",
          "MWT_DATA_DIR": DATA_ROOT + "/mwt",
          "LEMMA_DATA_DIR": DATA_ROOT + "/lemma",
          "POS_DATA_DIR": DATA_ROOT + "/pos",
          "DEPPARSE_DATA_DIR": DATA_ROOT + "/depparse",
          "ETE_DATA_DIR": DATA_ROOT + "/ete",
          "NER_DATA_DIR": DATA_ROOT + "/ner",
          "CHARLM_DATA_DIR": DATA_ROOT + "/charlm",
          "SENTIMENT_DATA_DIR": DATA_ROOT + "/sentiment",
          "CONSTITUENCY_DATA_DIR": DATA_ROOT + "/constituency",
          "COREF_DATA_DIR": DATA_ROOT + "/coref",
          # Set directories to store external word vector data
          "WORDVEC_DIR": "extern_data/wordvec",
          # TODO: not sure what other people actually have
          # TODO: also, could make this automatically update to the latest
          "UDBASE": "extern_data/ud2/ud-treebanks-v2.11",
          "UDBASE_GIT": "extern_data/ud2/git",
          "NERBASE": "extern_data/ner",
          "CONSTITUENCY_BASE": "extern_data/constituency",
          "SENTIMENT_BASE": "extern_data/sentiment",
          "COREF_BASE": "extern_data/coref",
          # there's a stanford github, stanfordnlp/handparsed-treebank,
          # with some data for different languages
          "HANDPARSED_DIR": "extern_data/handparsed-treebank",
          # directory with the contents of https://nlp.stanford.edu/projects/stanza/bio/
          # on the cluster, for example, /u/nlp/software/stanza/bio_ud
          "BIO_UD_DIR": "extern_data/bio",
          # data root for other general input files, such as VI_VLSP
          "STANZA_EXTERN_DIR": "extern_data",
      }
  
      paths = {"DATA_ROOT": DATA_ROOT}
      for k, v in defaults.items():
          paths[k] = os.environ.get(k, v)
  
      return paths
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_default_paths() and returns: paths