Bert Marshall

Bert Marshall was a hockey player.

I can't write this bio. The FACTS block contains a Wikipedia article titled "List of Canadian national ice hockey team rosters" — it has nothing about Bert Marshall in it. There's no birth/death dates, no teams he played for, no career arc, no achievements, no Hall-of-Fame status. Every name in that block (Crosby, McDavid, MacKinnon, etc.) belongs to 2025-26 national team rosters, not to Bert Marshall.

Per the instructions, I can only use facts in the FACTS block and must never pull from training knowledge. Since the block has zero usable facts about the subject, there's nothing to write.

**What to do next:** Re-run the fact-fetch for `bert_marshall` — the grounding step grabbed the wrong Wikipedia article (a roster list) instead of his player page. Worth checking whether other bios in this batch got mismatched source articles too.