Question: where are producers located on the energy pyramid
[{'answer': 'on the bottom', 'provenance': [{'wikipedia_id': '3574959', 'title': 'Ecological pyramid', 'start_paragraph_id': 3, 'start_character': 41, 'end_paragraph_id': 3, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3574959', 'title': 'Ecological pyramid', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 293, 'bleu_score': 0.940563996933202, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16965942524083178723}, 'section': 'Section::::Abstract.'}]}]