Question: how many subjects are there in union list of india
[{'answer': '100 items'}, {'provenance': [{'wikipedia_id': '38572130', 'title': 'Union List', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 462, 'bleu_score': 0.9526545221285041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4344220262164414263}, 'section': 'Section::::Abstract.'}]}]