Question: who has the greatest biomass in a food chain
[{'answer': 'plants', 'provenance': [{'wikipedia_id': '47492', 'title': 'Biomass (ecology)', 'start_paragraph_id': 1, 'start_character': 292, 'end_paragraph_id': 1, 'end_character': 298, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47492', 'title': 'Biomass (ecology)', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 382, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7203033469942135769}, 'section': 'Section::::Terrestrial biomass.\n'}]}]