Question: what types of organisms have the highest productivity
[{'answer': 'bacteria', 'provenance': [{'wikipedia_id': '47492', 'title': 'Biomass (ecology)', 'start_paragraph_id': 3, 'start_character': 182, 'end_paragraph_id': 3, 'end_character': 190, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47492', 'title': 'Biomass (ecology)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 512, 'bleu_score': 0.846194601998651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 891540475366453026}, 'section': 'Section::::Abstract.'}]}]