Question: who came to india from china during the reign of harshavardhana
[{'answer': 'Xuanzang', 'provenance': [{'wikipedia_id': '1198073', 'title': 'Harsha', 'start_paragraph_id': 2, 'start_character': 177, 'end_paragraph_id': 2, 'end_character': 185, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1198073', 'title': 'Harsha', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 530, 'bleu_score': 0.97451705556073, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18264372864008973403}, 'section': 'Section::::Abstract.'}]}]