Question: who was the british archaeologist that discovered the royal cemeteries at ur
[{'answer': 'Leonard Woolley', 'provenance': [{'wikipedia_id': '44400612', 'title': 'Royal Cemetery at Ur', 'start_paragraph_id': 1, 'start_character': 189, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44400612', 'title': 'Royal Cemetery at Ur', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 582, 'bleu_score': 0.9802931511945101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13879562338366142657}, 'section': 'Section::::Discovery.\n'}]}]