Question: the major constituents of earth's atmosphere are
[{'answer': 'Nitrogen', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 2, 'start_character': 35, 'end_paragraph_id': 2, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Oxygen', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 82, 'start_character': 343, 'end_paragraph_id': 82, 'end_character': 349, 'bleu_score': 1.0, 'section': "Section::::Evolution of Earth's atmosphere.:Second atmosphere.\n"}]}, {'answer': 'Argon', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 2, 'start_character': 66, 'end_paragraph_id': 2, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Carbon dioxide', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 2, 'start_character': 79, 'end_paragraph_id': 2, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Neon', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 7, 'start_character': 669, 'end_paragraph_id': 7, 'end_character': 673, 'bleu_score': 1.0, 'section': 'Section::::Composition.\n'}]}, {'answer': 'Helium', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 7, 'start_character': 675, 'end_paragraph_id': 7, 'end_character': 681, 'bleu_score': 1.0, 'section': 'Section::::Composition.\n'}]}, {'answer': 'Methane', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 7, 'start_character': 581, 'end_paragraph_id': 7, 'end_character': 588, 'bleu_score': 1.0, 'section': 'Section::::Composition.\n'}]}, {'answer': 'Water vapor', 'provenance': [{'wikipedia_id': '202898', 'title': 'Atmosphere of Earth', 'start_paragraph_id': 7, 'start_character': 84, 'end_paragraph_id': 7, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::Composition.\n'}]}]