code: def test_numbers(self):
      # No. of instances.
      self.assertEqual(len(nombank.instances()), 114574)
      # No. of rolesets
      self.assertEqual(len(nombank.rolesets()), 5577)
      # No. of nouns.
      self.assertEqual(len(nombank.nouns()), 4704)
  
imports: import unittest
  from nltk.corpus import nombank
label_desc: Use image node_id 1 for calling the NombankDemo obj's underlying member method code with example usage: obj.test_numbers() without return types