Question: where are the cones in the eye located
[{'answer': 'in the retina', 'provenance': [{'wikipedia_id': '534710', 'title': 'Cone cell', 'start_paragraph_id': 1, 'start_character': 46, 'end_paragraph_id': 1, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'in the fovea centralis', 'provenance': [{'wikipedia_id': '534710', 'title': 'Cone cell', 'start_paragraph_id': 1, 'start_character': 337, 'end_paragraph_id': 1, 'end_character': 359, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the retina', 'provenance': [{'wikipedia_id': '534710', 'title': 'Cone cell', 'start_paragraph_id': 1, 'start_character': 49, 'end_paragraph_id': 1, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'in the fovea centralis , a 0.3 mm diameter rod - free area'}, {'provenance': [{'wikipedia_id': '534710', 'title': 'Cone cell', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 600, 'bleu_score': 0.573529358254489, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15221693488552824179}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '749853', 'title': 'Fovea centralis', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['The fovea centralis is a small, central pit composed of closely packed cones in the eye. It is located in the center of the macula lutea of the retina', 'rp central vision (also called foveal vision), which is necessary in humans for activities where visual detail is of primary importance, such as reading and driving. The fovea is surrounded', 'The fovea centralis is a small, central pit composed of closely packed cones in the eye. It is located in the center of the macula lutea of the retina.']}}]}, {'provenance': [{'wikipedia_id': '534710', 'title': 'Cone cell', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Cone cells, or cones, are photoreceptor cells in the retinas of vertebrate eyes (e.g. the human eye). They respond differently to light of different wavelengths, and are thus responsible for color vision and function best in relatively bright light, as o', 'Cone cells are densely packed in the fovea centralis, a 0.3\xa0mm diameter rod-free area with very thin, densely packed cones which quickly reduce in number towards the periphery of the retina.']}}]}, {'provenance': [{'wikipedia_id': '401150', 'title': 'Photoreceptor cell', 'section': 'Section::::Phototransduction.\n', 'start_paragraph_id': 17, 'end_paragraph_id': 17, 'meta': {'evidence_span': ['Cones cannot detect color by themselves; rather, color vision requires comparison of the signal across different cone types. The process of phototransduction occurs in the retina. The retina has many layers of various cell types. The best-known photoreceptor cells ("rods" and "cones") form the outermost layer. They are the photoreceptors responsible for sight.', 'The retina has many layers of various cell types. The best-known photoreceptor cells ("rods" and "cones") form the outermost layer. They are the photoreceptors responsible for sight.']}}]}]