code: def __neg__(self):
      if self.value is True or self.value is False:
          return Predicate(self.feature, self.relation, not self.value)
      return Predicate(self.feature, -self.relation, self.value)
  
imports: import math
  from enum import Enum
  from typing import Dict, Any
  from aix360.algorithms.rule_induction.trxf.core.boolean_evaluator import BooleanEvaluator
  from aix360.algorithms.rule_induction.trxf.core.feature import Feature, is_number
label_desc: Use image node_id 6 for calling the Predicate obj's underlying member method code with example usage: obj.__neg__() and returns: Predicate, Predicate