code: def load_region(fpath):
      cols_names = ["R_REGIONKEY", "R_NAME", "R_COMMENT"]
      cols = {"R_REGIONKEY": np.int64, "R_NAME": str, "R_COMMENT": str}
      rel = pd.read_csv(
          fpath, sep="|", header=None, names=cols_names, dtype=cols
      )
      return rel
  
file_path: mars/benchmarks/tpch/loader.py
imports: import numpy
  import pandas
label_desc: Use image node_id 8 for calling a global function with example usage: load_region(fpath) and returns: rel