Question: what is the heaviest animal in the world on land
[{'answer': 'African Elephant'}, {'provenance': [{'wikipedia_id': '33786807', 'title': 'List of heaviest land mammals', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 385, 'bleu_score': 0.5557672139580591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14951439673322361159}, 'section': 'Section::::Abstract.'}]}]