With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Warren Casey is a writer and composer of the stage musical Grease.
text_B: Warren Casey -LRB- April 20 , 1935 -- November 8 , 1988 -RRB- was an American theatre composer , lyricist , writer , and actor .. American. United States. theatre. theatre. composer. composer. lyricist. lyricist. writer. writer. actor. actor. He is best known for being the writer and composer , with Jim Jacobs , of the stage and film musical Grease .. composer. composer. writer. writer. Jim Jacobs. Jim Jacobs. Grease. Grease ( musical )
related.