With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Khal Drogo was introduced in 1996.
text_B: Khal Drogo is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin , and its television adaptation Game of Thrones .. A Song of Ice and Fire. A Song of Ice and Fire. Game of Thrones. Game of Thrones. George R. R. Martin. George R. R. Martin. fictional character. fictional character. fantasy. fantasy. Introduced in 1996 's A Game of Thrones , Drogo is a khal , a leader of the Dothraki , a tribe of warriors who roam the continent of Essos .. Game of Thrones. Game of Thrones. A Game of Thrones. A Game of Thrones. Dothraki. Dothraki. Essos. Essos. Drogo is portrayed by Jason Momoa in the HBO television adaptation .. Jason Momoa. Jason Momoa. HBO. HBO
related.