With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Incredible Hulk is a film based in the Marvel Cinematic Universe.
text_B: The Arrogant-class ships of the line were a class of twelve 74-gun third rate ships designed by Sir Thomas Slade for the Royal Navy .. ships of the line. Ship of the line. 74-gun. Seventy-four ( ship ). third rate. third rate. Thomas Slade. Thomas Slade. Royal Navy. Royal Navy
not_related.