mquake-cf-instance-count

Summary

This pins down the exact size and origin of the MQuAKE-CF dataset: 9,218 examples, each built by taking a real fact chain from Wikidata and swapping in an altered fact to create a "what if" scenario. Every downstream claim about the dataset's coverage, difficulty, or statistical properties rests on this count and this construction method, so if the number or the source changes, those dependent claims need to be revisited.