Question: what was the first battle in the vietnam war
[{'answer': 'Battle of Ia Drang', 'provenance': [{'wikipedia_id': '983126', 'title': 'Battle of Ia Drang', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '983126', 'title': 'Battle of Ia Drang', 'start_paragraph_id': 1, 'start_character': 142, 'end_paragraph_id': 1, 'end_character': 974, 'bleu_score': 0.6701749883886741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17842448428308712876}, 'section': 'Section::::Abstract.'}]}]