Question: when was hitchhiker's guide to the galaxy published
[{'answer': '1979', 'provenance': [{'wikipedia_id': '31353', 'title': "The Hitchhiker's Guide to the Galaxy", 'start_paragraph_id': 30, 'start_character': 56, 'end_paragraph_id': 30, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Novels.:"The Hitchhiker\'s Guide to the Galaxy".\n'}]}, {'provenance': [{'wikipedia_id': '31353', 'title': "The Hitchhiker's Guide to the Galaxy", 'start_paragraph_id': 30, 'start_character': 8, 'end_paragraph_id': 30, 'end_character': 970, 'bleu_score': 0.9332017598854381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11296861986122167713}, 'section': 'Section::::Novels.:"The Hitchhiker\'s Guide to the Galaxy".\n'}]}]