Question: who was the walker rick killed in the first episode
[{'answer': 'Addy Miller', 'provenance': [{'wikipedia_id': '32520884', 'title': 'Days Gone Bye (The Walking Dead)', 'start_paragraph_id': 6, 'start_character': 217, 'end_paragraph_id': 6, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'answer': 'a little girl ( Addy Miller )'}, {'provenance': [{'wikipedia_id': '32520884', 'title': 'Days Gone Bye (The Walking Dead)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2490031163924098809}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32520884', 'title': 'Days Gone Bye (The Walking Dead)', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 322, 'bleu_score': 0.965203995518735, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2490031163924098809}, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '42000973', 'title': 'Barney Miller (season 6)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['This is a list of episodes from the sixth season of "Barney Miller".', 'This is a list of episodes from the sixth season of "Barney Miller".\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '32520884', 'title': 'Days Gone Bye (The Walking Dead)', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ['He spots a little girl (Addy Miller), but she turns out to be a zombie. When she charges towards him, Rick shoots her in the head.', 'The episode opens "in medias res" as former Sheriff Deputy Rick Grimes (Andrew Lincoln) scavenges for gas and supplies at an abandoned convenience store in rural Georgia on a deserted highway. He spots a little girl (Addy Miller), but she turns out to be a zombie. When she charges towards him, Rick shoots her in the head.\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '42004266', 'title': 'Barney Miller (season 7)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['This is a list of episodes from the seventh season of "Barney Miller".', 'This is a list of episodes from the seventh season of "Barney Miller".\rhighlight sentence(s) containing evidence, not only the answer']}}]}]