code: def unify_merge(a, b, U):
      return a
  
imports: from __future__ import absolute_import, print_function, division
  from copy import copy
  from functools import partial
  from theano.gof.utils import ANY_TYPE, comm_guard, FALL_THROUGH, iteritems
label_desc: Use image node_id 17 for calling a global function with example usage: unify_merge(a, b, U) and returns: a