code: def test_lsi_intermediates(lsi_model):
      assert isinstance(
          lsi_model.corpus, list
      ), "Output is not of the expected return type of list"
      assert isinstance(
          lsi_model.corpus[0][0], tuple
      ), "Output does not contain expected type of tuple inside of return value inside of the return value"
  
imports: import pandas
  import numpy
  import matplotlib
  import sklearn
  import pytest
  from data_describe.text.topic_modeling import topic_model
label_desc: Use image node_id 12 for calling a global function with example usage: test_lsi_intermediates(lsi_model) without return types