Question: animals that give birth to their young ones alive are called
[{'answer': 'mammals', 'provenance': [{'wikipedia_id': '83443', 'title': 'Birth', 'start_paragraph_id': 1, 'start_character': 71, 'end_paragraph_id': 1, 'end_character': 78, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '83443', 'title': 'Birth', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 561, 'bleu_score': 0.979484453366057, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12790886916973324927}, 'section': 'Section::::Abstract.'}]}]