Question: what does coup de gras mean in english
[{'answer': 'blow of mercy', 'provenance': [{'wikipedia_id': '1588656', 'title': 'Coup de grâce', 'start_paragraph_id': 1, 'start_character': 31, 'end_paragraph_id': 1, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1588656', 'title': 'Coup de grâce', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 251, 'bleu_score': 0.7640353032903401, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17409810425926146929}, 'section': 'Section::::Abstract.'}]}]