Question: what is the main language spoken in laos
[{'answer': 'Lao', 'provenance': [{'wikipedia_id': '140914', 'title': 'Lao language', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 3, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '140914', 'title': 'Lao language', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 261, 'bleu_score': 0.5057190202212221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15459036621193168434}, 'section': 'Section::::Abstract.'}]}]