Question: where would a primary producer be located in a food chain
[{'answer': 'the lowest trophic level', 'provenance': [{'wikipedia_id': '4442955', 'title': 'Primary producers', 'start_paragraph_id': 1, 'start_character': 1012, 'end_paragraph_id': 1, 'end_character': 1036, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]