Question: what does the a and w stand for in a&w
[{'answer': 'Allen', 'provenance': [{'wikipedia_id': '294810', 'title': 'A&W Restaurants', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Wright', 'provenance': [{'wikipedia_id': '294810', 'title': 'A&W Restaurants', 'start_paragraph_id': 1, 'start_character': 251, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '294810', 'title': 'A&W Restaurants', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 644, 'bleu_score': 0.929950341658426, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2675057324085956253}, 'section': 'Section::::Abstract.'}]}]