code: def _get_complex_type_production(complex_type):
      """
      Takes a complex type (without any placeholders), gets its return value, and returns a single
      production (perhaps with multiple arguments) that produces the return value.  For example, if
      the complex is ``<a,<<b,c>,d>>``, this gives the following tuple:
      ``('d', 'd -> [<a,<<b,c>,d>, a, <b,c>])``
      """
      return_type = complex_type.return_type()
      arguments = complex_type.argument_types()
      return return_type, _make_production_string(
          return_type, [complex_type] + arguments
      )
  
imports: from __future__ import absolute_import
  from collections import defaultdict
  from nltk.sem.logic import Expression, ApplicationExpression, ConstantExpression, LogicParser, Variable
  from nltk.sem.logic import Type, BasicType, ComplexType, ANY_TYPE
  from allennlp.common.util import START_SYMBOL
label_desc: Use image node_id 3 for calling a global function with example usage: _get_complex_type_production(complex_type) and returns: return_type,  _make_production_string