| http://www.w3.org/ns/prov#value | - Vegetables such as kale, collard greens, spinach, cress leaf, Swiss chard, chicory leaf, mustard greens, beet greens, red pepper, okra, endive, celery, romaine lettuce, leek, broccoli, leaf lettuce, green peas, pumpkin, iceberg lettuce, Brussels sprouts, yellow corn, yellow pepper and green beans are the richest sources of lutein and zeaxanthin.
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