With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boromir is mentioned in the third and last volume of The Lord of the Rings.
text_B: The Return of the King is the third and final volume of J. R. R. Tolkien 's The Lord of the Rings , following The Fellowship of the Ring and The Two Towers .. J. R. R. Tolkien. J. R. R. Tolkien. The Two Towers. The Two Towers. The Lord of the Rings. The Lord of the Rings. The Fellowship of the Ring. The Fellowship of the Ring. The story begins in the kingdom of Gondor , which is soon to be attacked by the Dark Lord Sauron .. Gondor. Gondor. Sauron. Sauron
related.