With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Beach Boys had the most US Top 40 hits of a Canadian rock band.
text_B: Helicotylenchus multicinctus is a plant pathogenic nematode that affects primarily bananas and plantains .. Helicotylenchus. Helicotylenchus. Nematodes of the genus Helicotylenchus are spiral nematodes and feed on a large variety of plant species .. Helicotylenchus. Helicotylenchus
not_related.