Question: when did arab invade on india first time
[{'answer': '643 AD', 'provenance': [{'wikipedia_id': '2871422', 'title': 'Muslim conquests in the Indian subcontinent', 'start_paragraph_id': 10, 'start_character': 324, 'end_paragraph_id': 10, 'end_character': 330, 'bleu_score': 1.0, 'section': 'Section::::Early Muslim presence.\n'}]}, {'provenance': [{'wikipedia_id': '2871422', 'title': 'Muslim conquests in the Indian subcontinent', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 693, 'bleu_score': 0.9839344367380701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 638180611586257683}, 'section': 'Section::::Rashidun Caliphate and the Indian frontier.\n'}]}]