question: drought:desert
choices.label: A B C D
choices.text: straight:trunk hardness:cement cold:antarctica rainy:equator
explanation: "drought" is an inevitable attribute of "desert". "trunk" is not necessarily "straight", "straight" is a probable attribute of "trunk", which is inconsistent with the logic of the query. "hardness" is not an inevitable attribute of "cement". "antarctica" must be "cold", and "cold" is the inevitable attribute of "antarctica". "rainy" is a probable attribute of the "equator".
relation: desert drought R3.1
relation: trunk straight R3.2
relation: antarctica cold R3.1
relation: equator rainy R3.2