Text: Walcott twins Clare--who was driven mad by social injustice and consoled by the smallest beings in nature--with mad Tom, Edgar's disguise in King Lear , who, like Clare, wanders the English countryside praising frogs and  I am moved like you, mad Tom, by a line of ants;/ I behold their industry and they are giants.
Entailment: Clare was upset over social injustice.
Contradiction: Clare hated nature.