"113005854"@en-us . . "13783421-n"^^ . . . . . "contrary"@en-us . "105059227"@en-us . "contrary"^^ . . . . . . "0.25"^^ . . "113783421"^^ . . . . . . . "0.125"^^ . "a logical relation such that two propositions are contraries if both cannot be true but both can be false"@en-us .