Question: how many episodes of preacher season 2 are there
[{'answer': '13', 'provenance': [{'wikipedia_id': '45714153', 'title': 'Preacher (TV series)', 'start_paragraph_id': 44, 'start_character': 18, 'end_paragraph_id': 44, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Production.:Development.\n'}]}, {'provenance': [{'wikipedia_id': '45714153', 'title': 'Preacher (TV series)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 496, 'bleu_score': 0.5806149730558321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9274481001087690913}, 'section': 'Section::::Abstract.'}]}]