Question: what specific type of acquired immunity vaccines provide
[{'answer': 'Artificially acquired active immunity', 'provenance': [{'wikipedia_id': '298547', 'title': 'Immunity (medical)', 'start_paragraph_id': 30, 'start_character': 11, 'end_paragraph_id': 30, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::Active.:Naturally acquired active immunity.\n'}]}, {'provenance': [{'wikipedia_id': '298547', 'title': 'Immunity (medical)', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 596, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6082470815128475009}, 'section': 'Section::::Active.:Artificially acquired active immunity.\n'}]}]