docstr: Attempt to unify this Clause with the other, returning a list of
  resulting, unified, Clauses.
  
  :param other: ``Clause`` with which to unify
  :param bindings: ``BindingDict`` containing bindings that should be used
      during the unification
  :param used: tuple of two lists of atoms.  The first lists the
      atoms from 'self' that were successfully unified with atoms from
      'other'.  The second lists the atoms from 'other' that were successfully
      unified with atoms from 'self'.
  :param skipped: tuple of two ``Clause`` objects.  The first is a list of all
      the atoms from the 'self' Clause that have not been unified with
      anything on the path.  The second is same thing for the 'other' Clause.
  :param debug: bool indicating whether debug statements should print
  :return: list containing all the resulting ``Clause`` objects that could be
      obtained by unification
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code: def unify(
      self, other, bindings=None, used=None, skipped=None, debug=False
  ):
      """
      Attempt to unify this Clause with the other, returning a list of
      resulting, unified, Clauses.
  
      :param other: ``Clause`` with which to unify
      :param bindings: ``BindingDict`` containing bindings that should be used
          during the unification
      :param used: tuple of two lists of atoms.  The first lists the
          atoms from 'self' that were successfully unified with atoms from
          'other'.  The second lists the atoms from 'other' that were successfully
          unified with atoms from 'self'.
      :param skipped: tuple of two ``Clause`` objects.  The first is a list of all
          the atoms from the 'self' Clause that have not been unified with
          anything on the path.  The second is same thing for the 'other' Clause.
      :param debug: bool indicating whether debug statements should print
      :return: list containing all the resulting ``Clause`` objects that could be
          obtained by unification
      """
      if bindings is None:
          bindings = BindingDict()
      if used is None:
          used = ([], [])
      if skipped is None:
          skipped = ([], [])
      if isinstance(debug, bool):
          debug = DebugObject(debug)
  
      newclauses = _iterate_first(
          self,
          other,
          bindings,
          used,
          skipped,
          _complete_unify_path,
          debug,
      )
  
      # remove subsumed clauses.  make a list of all indices of subsumed
      # clauses, and then remove them from the list
      subsumed = []
      for i, c1 in enumerate(newclauses):
          if i not in subsumed:
              for j, c2 in enumerate(newclauses):
                  if i != j and j not in subsumed and c1.subsumes(c2):
                      subsumed.append(j)
      result = []
      for i in range(len(newclauses)):
          if i not in subsumed:
              result.append(newclauses[i])
  
      return result
  
imports: import operator
  from collections import defaultdict
  from functools import reduce
  from nltk.inference.api import BaseProverCommand, Prover
  from nltk.sem import skolemize
  from nltk.sem.logic import AndExpression, ApplicationExpression, EqualityExpression, Expression, IndividualVariableExpression, NegatedExpression, OrExpression, Variable, VariableExpression, is_indvar, unique_variable
label_desc: Use image node_id 2 for calling the Clause obj's underlying member method code with example usage: obj.unify(other, bindings, used, skipped, debug) and returns: result