code: def __init__(self, grp_expr: GroupExpression, cost: float):
      self._cost = cost
      self._grp_expr = grp_expr
  
imports: from __future__ import annotations
  from typing import Dict, List
  from evadb.constants import UNDEFINED_GROUP_ID
  from evadb.optimizer.group_expression import GroupExpression
  from evadb.optimizer.property import Property
  from evadb.utils.logging_manager import logger
label_desc: Use image node_id 1 to create a new Winner object  with example: obj = Winner(grp_expr, cost)