Question: how many discs in game of thrones season 4
[{'answer': '5', 'provenance': [{'wikipedia_id': '38710170', 'title': 'Game of Thrones (season 4)', 'start_paragraph_id': 1, 'start_character': 154, 'end_paragraph_id': 1, 'end_character': 155, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]