With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Gene Hackman died before appearing in a 2004 film.
text_B: ClearTalk is a controlled natural language -- a kind of a formal language for expressing information that is designed to be both human-readable -LRB- being based on English -RRB- and easily processed by a computer .. controlled natural language. controlled natural language. formal language. formal language. human-readable. human-readable. processed by a computer. natural language processing. Anyone who can read English can immediately read ClearTalk , and the people who write ClearTalk learn to write it while using it .. The ClearTalk system itself does most of the training through use  : the restrictions are shown by menus and templates and are enforced by immediate syntactic checks .. By consistently using ClearTalk for its output , a system reinforces the acceptable syntactic forms .. It is used by the experimental knowledge management software Ikarus and by a knowledge base management system Fact Guru .. knowledge management. knowledge management. Ikarus. Ikarus ( knowledge management ). knowledge base. knowledge base
not_related.