code: def normalize_pos(self, p):
      if p == "NN" or p == "NR":
          return "n"
      elif p == "VV":
          return "v"
      else:
          return "o"
  
imports: from .cnsample import CnSample
  from ..field import ListField, Field
  from ....common.settings import ORIGIN, TASK_MASK, MODIFIED_MASK
label_desc: Use image node_id 6 for calling the DPCnSample obj's underlying member method code with example usage: obj.normalize_pos(p) and returns: str, str, str