Question: when was the first international space station launched into orbit
[{'answer': '1998', 'provenance': [{'wikipedia_id': '15043', 'title': 'International Space Station', 'start_paragraph_id': 4, 'start_character': 40, 'end_paragraph_id': 4, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]