With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Imagine Dragons are an American rock band.
text_B: Button , button , who 's got the button is a game of ingenuity where players form a circle with their hands out , palms together .. button. button. One child , called the leader or ` it ' , takes an object such as a button and goes around the circle , putting their hands in everybody else 's hands one by one .. button. button. In one person 's hands they drop the button , though they continue to put their hands in the others ' so that no one knows where the button is except for the giver and receiver .. button. button. The leader , or all the children in the circle , says `` Button , button , who 's got the button ? ''. button. button. and then each child in the circle guesses .. The child guessing replies with their choice , e.g. `` Billy has the button ! ''. button. button. Once the child with the button is finally guessed , that child is the one to distribute the button and start a new round .. button. button
not_related.