Question: who were farmers who kept a small portion of their crops & gave the rest to the landowners
[{'answer': 'Sharecropping', 'provenance': [{'wikipedia_id': '445914', 'title': 'Sharecropping', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '445914', 'title': 'Sharecropping', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 542, 'bleu_score': 0.9495863453122391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13251717839479933445}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '445914', 'title': 'Sharecropping', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13251717839479933445}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '445914', 'title': 'Sharecropping', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Sharecropping is a form of agriculture in which a landowner allows a tenant to use the land in return for a share of the crops produced on their portion of land. Sharecropping has a long history and there are a wide range of different situations and types of agreements that have used a form of the system. Some are governed by tradition, and others by law. Legal contract systems such as the Italian "mezzadria", the French "métayage", the Spanish "mediero", the Slavic "połowcy","издoльщина" or the Islamic system of "muqasat", occur widely.', 'Sharecropping is a form of agriculture in which a landowner allows a tenant to use the land in return for a share of the crops produced on their portion of land', 'Sharecropping is a form of agriculture in which a']}}]}]