Question: who plays grey worm on game of thrones
[{'answer': 'Jacob Basil Anderson', 'provenance': [{'wikipedia_id': '27990160', 'title': 'Jacob Anderson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27990160', 'title': 'Jacob Anderson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 441, 'bleu_score': 0.7762887454792581, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4253514035637933356}, 'section': 'Section::::Abstract.'}]}]