Question: what real life mission returned a sample from a comet
[{'answer': 'Stardust', 'provenance': [{'wikipedia_id': '2680305', 'title': 'Sample-return mission', 'start_paragraph_id': 18, 'start_character': 34, 'end_paragraph_id': 18, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Sample-return missions.:New missions after a 20-year hiatus.\n'}]}, {'provenance': [{'wikipedia_id': '2680305', 'title': 'Sample-return mission', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 722, 'bleu_score': 0.8928097327616991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7198233836753880712}, 'section': 'Section::::Sample-return missions.:New missions after a 20-year hiatus.\n'}]}]