Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| STAPLE: | Maize / Corn | Rice | Wheat | Potato | Cassava | Soybean (Green) | Sweet potato | Sorghum | Yam | Plantain |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Component (per 100g portion) | Amount | Amount | Amount | Amount | Amount | Amount | Amount | Amount | Amount | Amount |
| Water (g) | 10 | 12 | 13 | 79 | 60 | 68 | 77 | 9 | 70 | 65 |
| Energy (kJ) | 1528 | 1528 | 1369 | 322 | 670 | 615 | 360 | 1419 | 494 | 511 |
| Protein (g) | 9.4 | 7.1 | 12.6 | 2.0 | 1.4 | 13.0 | 1.6 | 11.3 | 1.5 | 1.3 |
| Fat (g) | 4.74 | 0.66 | 1.54 | 0.09 | 0.28 | 6.8 | 0.05 | 3.3 | 0.17 | 0.37 |
| Carbohydrates (g) | 74 | 80 | 71 | 17 | 38 | 11 | 20 | 75 | 28 | 32 |
| Fiber (g) | 7.3 | 1.3 | 12.2 | 2.2 | 1.8 | 4.2 | 3 | 6.3 | 4.1 | 2.3 |
| Sugar (g) | 0.64 | 0.12 | 0.41 | 0.78 | 1.7 | 0 | 4.18 | 0 | 0.5 | 15 |
| Calcium (mg) | 7 | 28 | 29 | 12 | 16 | 197 | 30 | 28 | 17 | 3 |
| Iron (mg) | 2.71 | 0.8 | 3.19 | 0.78 | 0.27 | 3.55 | 0.61 | 4.4 | 0.54 | 0.6 |
| Magnesium (mg) | 127 | 25 | 126 | 23 | 21 | 65 | 25 | 0 | 21 | 37 |
| Phosphorus (mg) | 210 | 115 | 288 | 57 | 27 | 194 | 47 | 287 | 55 | 34 |
| Potassium (mg) | 287 | 115 | 363 | 421 | 271 | 620 | 337 | 350 | 816 | 499 |
| Sodium (mg) | 35 | 5 | 2 | 6 | 14 | 15 | 55 | 6 | 9 | 4 |
| Zinc (mg) | 2.21 | 1.09 | 2.65 | 0.29 | 0.34 | 0.99 | 0.3 | 0 | 0.24 | 0.14 |
| Copper (mg) | 0.31 | 0.22 | 0.43 | 0.11 | 0.10 | 0.13 | 0.15 | - | 0.18 | 0.08 |
| Manganese (mg) | 0.49 | 1.09 | 3.99 | 0.15 | 0.38 | 0.55 | 0.26 | - | 0.40 | - |
| Selenium (μg) | 15.5 | 15.1 | 70.7 | 0.3 | 0.7 | 1.5 | 0.6 | 0 | 0.7 | 1.5 |
| Vitamin C (mg) | 0 | 0 | 0 | 19.7 | 20.6 | 29 | 2.4 | 0 | 17.1 | 18.4 |
| Thiamin (mg) | 0.39 | 0.07 | 0.30 | 0.08 | 0.09 | 0.44 | 0.08 | 0.24 | 0.11 | 0.05 |
| Riboflavin (mg) | 0.20 | 0.05 | 0.12 | 0.03 | 0.05 | 0.18 | 0.06 | 0.14 | 0.03 | 0.05 |
| Niacin (mg) | 3.63 | 1.6 | 5.46 | 1.05 | 0.85 | 1.65 | 0.56 | 2.93 | 0.55 | 0.69 |
| Pantothenic acid (mg) | 0.42 | 1.01 | 0.95 | 0.30 | 0.11 | 0.15 | 0.80 | - | 0.31 | 0.26 |
| Vitamin B6 (mg) | 0.62 | 0.16 | 0.3 | 0.30 | 0.09 | 0.07 | 0.21 | - | 0.29 | 0.30 |
| Folate Total (μg) | 19 | 8 | 38 | 16 | 27 | 165 | 11 | 0 | 23 | 22 |
| Vitamin A (IU) | 214 | 0 | 9 | 2 | 13 | 180 | 14187 | 0 | 138 | 1127 |
| Vitamin E, alpha-tocopherol (mg) | 0.49 | 0.11 | 1.01 | 0.01 | 0.19 | 0 | 0.26 | 0 | 0.39 | 0.14 |
| Vitamin K1 (μg) | 0.3 | 0.1 | 1.9 | 1.9 | 1.9 | 0 | 1.8 | 0 | 2.6 | 0.7 |
| Beta-carotene (μg) | 97 | 0 | 5 | 1 | 8 | 0 | 8509 | 0 | 83 | 457 |
| Lutein+zeaxanthin (μg) | 1355 | 0 | 220 | 8 | 0 | 0 | 0 | 0 | 0 | 30 |
| Saturated fatty acids (g) | 0.67 | 0.18 | 0.26 | 0.03 | 0.07 | 0.79 | 0.02 | 0.46 | 0.04 | 0.14 |
| Monounsaturated fatty acids (g) | 1.25 | 0.21 | 0.2 | 0.00 | 0.08 | 1.28 | 0.00 | 0.99 | 0.01 | 0.03 |
| Polyunsaturated fatty acids (g) | 2.16 | 0.18 | 0.63 | 0.04 | 0.05 | 3.20 | 0.01 | 1.37 | 0.08 | 0.07 |
Question:
what staple has the most potassium?
Answer:
Yam