With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Serena Williams competes in women's clay court and hard court.
text_B: The Chipmunks Sing with Children is an album by Alvin and the Chipmunks with David Seville .. The Chipmunks. The Chipmunks. album. album. Alvin and the Chipmunks. Alvin and the Chipmunks. David Seville. David Seville. It was released on January 1 , 1965 by Liberty Records .. Liberty. Liberty Records. Liberty Records. Liberty Records
not_related.