question: stone wall:earth wall
choices.label: A B C D
choices.text: wind energy:hydro energy legal:illegal riverway:waterway new house:wedding room
explanation: both "stone wall" and "earth wall" are walls, but after "stone wall" and "earth wall", brick walls are also walls. both "wind energy" and "hydro energy" belong to energy, but in addition to "wind energy" and "hydro energy", nuclear energy also belongs to energy. "legal" and "illegal" contradict each other. "riverway" refers to the route through which river water flows, and "waterway" refers to the route of water flow, including ditches, canals, rivers, and rivers. a "new house" can be a "marriage house", and a "marriage house" can also be a "new house".
relation: stone wall earth wall R2.6
relation: wind energy hydro energy R2.6
relation: legal illegal R2.5
relation: riverway waterway R2.2