choices.label: A B C D
choices.text: red beans:soy milk soy milk:oatmeal milk:cow swallow:bird's nest
explanation: both "mung beans" and "peas" are legumes. the raw material for making "soy milk" is "red beans". both "soy milk" and "oatmeal" are nutritional products. "milk" is the product of "cow". "swallows" will set up a "bird's nest".
relation: mung beans peas R2.4
relation: red beans soy milk R3.7
relation: soy milk oatmeal R2.4
relation: milk cow R3.10
relation: swallow bird's nest R3.10