With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Neymar made his professional debut at age 17.
text_B: A moonraker , also known as a moonsail , hope-in-heaven , or hopesail , is a square sail flown immediately above a skysail -LRB- see sail-plan -RRB- on the royal masts of a square rigged sailing ship .. sail. sail. skysail. skysail. sail-plan. sail-plan. sailing ship. sailing ship. None of the four - and five-masted square rigged ships carried a moonsail .. The equivalent sail , if triangular , is called a skyscraper .. sail. sail. Moonrakers are relatively unusual sails only used on ships built primarily for speed .
not_related.