1. A computer-implemented method for generating an output banner associated with a Chinese language input couplet comprising first and second sentences, the method comprising: identifying a set of related words, each related word being identified based on a number of times that the related word and a word in the input couplet occur at a same position in a couplet corpus, each of the words in the set of related words and the input couplet being in a Chinese language; calculating an association strength between each of the related words in the set of related words and the input couplet; utilizing a computer processor that is a component of a computer to combine related words in the set of related words in a plurality of different combinations to create a set of banner candidates, the related words in the set of related words being combined based on their association strengths; selecting the output banner from the set of banner candidates; and providing an output indicative of the output banner.