 Many sophismata too are what medieval logicians called ‘exponible sentences’ (‘exponibilia’); these are sentences that appear to be simple but actually imply several other sentences into which they can be decomposed. For example, the sentence, ‘A differs from B’, was said to be equivalent to ‘A exists and B exists and A is not B’, whereas the sentence, ‘A ceases to be white’, was said to be equivalent either to ‘Now A is white and immediately after this A will not be white’ or to ‘Now A is not white and immediately before this A was white’, depending on the theory.